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BBB advocate Bernie Sanders extolled the USSR in 1988, three years later the empire collapsed – Fox News

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As Bernie Sanders was building his political career as a Vermont mayor, he visited the Soviet Union in 1988 for a 10-day "honeymoon" and returned to America extolling how impressive the communist state was. Just three years later, Mikhail Gorbachev resigned as president and the red Soviet flag was pulled from the Kremlin.

Decades following Sanders self-described "very strange honeymoon," his trip has seemingly continued shaping his domestic and foreign policies and moved the dial of the Democratic Party to the left.

"The fact that we were willing to be critical of the United States I think that made them maybe more appreciative of our criticisms we made of their own society," Sanders said in 88 when he returned home.

Democratic presidential candidate Sen. Bernie Sanders, I-Vt., speaks during a Democratic presidential primary debate hosted by CNN/New York Times at Otterbein University, Tuesday, Oct. 15, 2019, in Westerville, Ohio. (AP Photo/John Minchillo)

"We were saying, Yeah, in our country, we also have a housing crisis. Our housing in general is better than yours, but people are paying 40 percent of their income for housing. The quality of your housing is not good, but we appreciate the fact that people are paying 5 percent. The quality of your health care is not good, but in the United States, believe me, we have enormous problems in terms of our health-care system."

DETAILS OF SANDERS SOVIET HONEYMOON EXPOSED, AS ENTOURAGE MEMBER RECALLS SHOCK AT BERNIES AMERICA-BASHING

He praised the USSR for its public transportation system and its "absolutely beautiful" train stations with chandeliers, culture programs, youth programs and took shots at U.S. foreign policies under then-President Ronald Reagan.

"Lets take the strengths of both systems," he added following the trip. "Lets learn from each other."

This year, negotiations over President Biden's signature legislation, called Build Back Better - which Sanders helped design - is looming over Congress, and features policies similar to those Sanders applauded when they were implemented in other nations, such as an expansion of government health care and taxpayer-funded child care programs.

Recent interviews with those who attended the USSR trip with Sanders say, however, that the group was warned by locals that the USSR was about to collapse.

"I think [Sanders] saw and we all saw the downside of the Soviet system," Howard Seaver, a Vermont businessman who was on the trip, told the Washington Post in 2019. "Yes, they may have had low-cost apartments, but things were very out of whack there were food shortages, no political freedom."

BEN SHAPIRO: BERNIE SANDERS IS NOT A SOCIAL DEMOCRAT, HE'S A LIFELONG COMMUNIST. DEMS HAVE NO GATEKEEPERS

"I suspect that what Bernie saw in Russia probably affected his views that you see today, where he is not anti-free-enterprise or capitalism but he wants to have a safety net and give a fair shake to all, but certainly not to have a command economy we saw in the Soviet Union," Seaver said.

The warnings from locals proved true and the USSR collapsed in 1991, when Gorbachev resigned on Christmas Day.

FILE - In this Jan. 14, 1991 file photo, Soviet President Mikhail Gorbachev says in Moscow that a local military commander ordered the use of force in the breakaway republic of Lithuania, where an assault by Soviet troops on Jan. 13, 1991 claimed 14 lives. On Monday, Oct. 17, 2016, a Lithuanian court has called on Gorbachev to testify in a mass trial related to the 1991 crackdown on the countrys independence movement. (AP Photo/Boris Yurchenko, File) (The Associated Press)

IS BERNIE SANDERS 'DEMOCRATIC SOCIALISM' REALLY JUST SOCIALISM?

Experts have disputed Sanders rosy depiction of the USSR, saying it's a far cry from what residents actually lived through on a daily basis.

"When I lived in the Soviet Union, everything was falling apart," Anna Borshchevskaya, a senior fellow at The Washington Institute for Near East Policy, told the Washington Examiner in 2019. "People don't realize how many people Stalin killed by building the Moscow subway station. Sure, the trains worked, but that other factor is dismissed. I have no doubt Bernie was sincere in what he said, but there was a whole disregard for life and safety in every aspect of Soviet life, including infrastructure."

But the USSR trip was so ostensibly moving for Sanders,he planned another trip abroad - this time to communist Cuba the following year.

He returned from the trip also extolling the communist state as one that was "not a perfect society," but having "very high-quality health care" and no homelessness that he witnessed.

BERNIE SANDERS' LONG HISTORY OF PRAISING CUBA'S COMMUNISTS

"I did not see a hungry child. I did not see any homeless people," Sanders said of the trip. The country "not only has free health care but very high-quality health care The revolution there is far deeper and more profound than I understood it to be. It really is a revolution in terms of values."

Just last year, Sanders again praised communist Cuba, telling "60 Minutes," "its unfair to simply say everything is bad" about the late Fidel Castro's regime. Adding that though he was "opposed to the authoritarian nature of Cuba," Castro implemented a "massive literacy program."

HAVANA, CUBA - MAY 1: Fidel Castro observes the May Day parade at the Revolution Square in Havana, Cuba May 1, 1998. (Photo by Sven Creutzmann/Mambo Photography/Getty Images)

Sanders history with communism, socialism and Marxism has roots in his youth. In 1963 when he was a college student, Sanders was the guest of a Marxist youth movement founded by communist Yaakov Hazan. In the 70s he helped found the socialist Liberty Union Party in Vermont. By 1972 he said he didnt "mind people calling me a communist." And in 1985, he also made a trip to Nicaragua and called Marxist Nicaraguan President Daniel Ortega "an impressive guy."

The accolades of such regimes have earned Sanders stern criticism from those who suffered under communism and socialism, as well as from fellow politicians. But Sanders has continued pushing for the acceptance of mainstream socialism and has helped move the dial of the Democratic Party further left.

This year, Democratic in-fighting over Sanders' version of Build Back Better, which started as a $6 trillion social spending proposal, has since been whittled down to a $1.7 trillion social spending package.

BERNIE SANDERS SILENT ON CUBAN PRO-FREEDOM UPRISINGS AFTER PRAISING FIDEL CASTRO'S COMMUNIST POLICIES

Conservatives have panned the bill as the "Democrats' down payment on socialism" and shifting a massive amount of power from state and local governments to the federal government. Sen. Joe Manchin broke with Democrats last weekend, sounding the bill's death knell by saying he wouldnt vote for it.

"Radical lawmakers are looking to stuff far-left, unpopular wish-list items into this proposal, including taxpayer-funded universal pre-K, expansion of government health care, and more just as they did with special interest bailouts in the recent COVID stimulus package," David Ditch, research associate for the Grover M. Hermann Center for the Federal Budget at the Hertiage Foudation, recently said.

FILE - In this March 15, 2020, file photo, former Vice President Joe Biden, left, and Sen. Bernie Sanders, I-Vt., right, greet one another before they participate in a Democratic presidential primary debate at CNN Studios in Washington. Sanders said Tuesday that it would be "irresponsible" for his loyalists not to support Joe Biden, warning that progressives who "sit on their hands" in the months ahead would simply enable President Donald Trumps reelection (AP Photo/Evan Vucci, File)

But Sanders has only become more vocal in his advocacy for the legislation, and his comments harken back to his praise of communist nations, and his claims of their commitment to education, health care and the poor.

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"At this pivotal moment in U.S. history, its time for the Senate to vote on a bill that will substantially improve the lives of working families, the elderly, the sick and the poor, while taking on the unbridled greed of the wealthy and the powerful," Sanders wrote in a recent op-ed for Fox News.

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BBB advocate Bernie Sanders extolled the USSR in 1988, three years later the empire collapsed - Fox News

The curious rise of white left nationalism Communist Party USA – Communist Party USA

In Western European countries it used often to be said: We must have fascism before communism. First the capitalists will abandon democracy and introduce the fascist dictatorship, and then the workers will overthrow the fascist dictatorship. But the Communists replied, no, we will fight together with all the democratic forces to preserve bourgeois democracy and to defeat the fascists, and that will create the best conditions for going forward to win working-class power and to commence to build socialism.

Maurice Cornforth, Materialism and the Dialectical Method

There is a concerning, but not surprising, trend that is exposing itself among the left that smacks of social democracy and class collaboration. This trend, though seemingly harmless, is damaging to youth coming into the movement. It wraps itself in Marxist verbiage while its conclusions end up taking positions of the right. Those who promote these ideas are falling into the hands of the racist monopolists and reactionaries. As a result, they will slow progress toward socialism, potentially putting us on the march toward fascism.

Let me remind readers that our party, the Communist Party, was in part founded in response to the rejection of the anti-Marxist denial of the special character of racist oppression in the U.S. held by the old Socialist Party. Our late chair, Henry Winston, said in Strategy for a Black Agenda,

While the Communist Party saw from its inception that the struggle against racist oppression was part of the class struggle, it also recognized that Blacks were oppressed as a people and that labor with a white skin and labor with a Black skin could not be free unless the special demands of the triply oppressed Black people were put at the center of the struggle for progress and socialism.

An ideological trend that might be classified as white left nationalism repeats the mistakes of the old Socialist Party on its approach to the national question. These white left nationalist trends shout class, class, class! and left, left, left! while deploring what they call identity politics and narrowly pointing to historical failures of socialist projects and the left in the United States in particular.

They repeat the line voiced by New Left socialists and Third Worldist Maoists that the working class in the United States has betrayed the movement for socialism and that it is time to think of it in a new way, if not completely ignore it as a mainspring of revolutionary activity.

At best this is a defeatist position.

Much of these ideas come from folks who contributed to what we now call the crisis of petty bourgeois radicalism, where middle-class radicals reach a certain level of consciousness and want to take shortcuts to revolution and leave the masses (less conscious sections) of people behind in this process. These ideas persist to this day in various forms of postmodernism, anarchism, and Maoism.

Instead of seeing revolutionary potential in the U.S. working class, these forces promote a newfound fetishization of the lumpen-proletariat (that is, declassed strata) as the new revolutionary class, urban peasant guerilla warfare, and other theories associated with the Frankfurt School for Social Science (like Herbert Marcuse). A seemingly odd combination of national nihilism (downplaying of a countrys traditions) and national chauvinism (an overemphasis of the same) also plays a part.

Identity politics, or struggle for equality?

With respect to whats derisively called identity politics, political correctness, wokeness, or cancel culture (but what we call the struggle for equality), these forces allege that addressing discrimination contributes to disunity and de-emphasizes class, by which they mean white male workers.

Our party does not reduce all struggles to class. It participates in the equality struggles of racially and nationally oppressed peoples (African American, Puerto Rican, Mexican American, Middle Eastern, Asian American, Native American and other Indigenous nations, etc.) and recognizes that true liberation will come from a) fighting on these issues in the here and now and b) in the process of the battle for a different political, social, and economic system socialism. Both have to happen simultaneously.

The overwhelming majority of the different specially oppressed peoples in the United States are working class upwards of 80% to 90%. And they are oppressed in that they face special forms of mistreatment because of their race, that is, the color of their skin, the texture of their hair, and so on. This means that, to build the requisite unity needed for substantial class struggle victories, and to liberate the entire working class, the struggle against racism and national oppression must be put at the center of all these struggles.

These are all-class questions, meaning that we are championing the equality demands for entire peoples, regardless of what class or strata they come from. The racially oppressed and women face historic and present discrimination in the form of pay and voting rights, for example, no matter their class position.

And let us not forget that this country was founded on the near genocide of its native population, and the modern capitalist system was built on the backs of African peoples.

The Communist Party in the United States has historically been at the forefront of the global struggle against white supremacy. This includes but is not limited to the struggle to free the Scottsboro Nine; fighting Italian fascist aggression in Ethiopia; the battle for equal wages between black, brown, Asian, and white workers; bringing the charge of genocide against the African American people to the United Nations; along with campaigns against Jim Crow segregation here and South African apartheid abroad the list goes on.

All of these struggles included many forces across the political spectrum (not strictly Communists) who came together on these issues a united front was and remains an essential part of the struggle.

A false unity

But, while championing the fight for unity, the CPUSA doesnt treat the concept as an abstract ideal or promote unity at all costs. Indeed, theres a false unity implied by dismissing the democratic struggles of sections of our class in order to supposedly organize reactionaries under the pretext of bringing in white workers. As noted by Ferdinand Smith, leader of the National Maritime Union in a letter to William L. Patterson in 1958, Unity is always a most desirable thing but unity at all cost can be a mistake of the first order.

As noted by Gerald Horne in a recent piece, the attempt to build class unity without confronting these underlying tensions often has meant coercing oppressed nationalities Blacks in the first place to co-sign a kind of left-wing white nationalism. What Horne is trying to argue is that if we dont reckon with this countrys foundational history regarding settler colonial genocide of its native population and the class collaboration inherent in subsequent enslavement of African peoples, were likely to end up uncritically uplifting slave owners, putting ourselves in a conundrum of uniting with the ideological descendants of those who created the conditions in the first place. Horne was attacked by right-opportunist Trotskyites on the World Socialist Website for his important contributions on these topics.

Former chair of the CPUSAs Black Liberation Commission Roscoe Proctor noted in his must-read pamphlet Black Workers and the Class Struggle:

There are many differences within the working class. These differences, though not inherently contradictory, are constantly used by the ruling class to pit one section of workers against another, thereby dividing the working class against itself and weakening its struggle against the capitalist class. Among these differences are differences between young and old, male and female, skilled and unskilled, craft and industrial workers, white-collar and blue-collar workers.

Without a doubt, one single most powerful weapon in the arsenal of the ruling class used to cause division in the ranks of the working class is racism. Together with anti-Communism, racism historically and today has blinded white workers from seeing that their true class interest lies in unity with Black and other oppressed workers at the point of production and in fighting against all such oppression throughout the society.

So, left nationalism among whites in this context blinds them from seeing that their true class interest lies in unity with Black and other oppressed workers. White Americans cannot struggle for progress while participating in the oppression of Black and other specially oppressed workers and peoples.

Working class white workers

Its important to point out here that white left nationalism is not a working-class concept but is instead a feature of middle-class radicalism.

Often youll hear it when folks use the term working class or Trump voters when what is actually meant is white workers. Trumpsters do it all the time when they talk about the GOP as a workers party. Listen and youll hear a subtle switch, replacing in the minds eye people of color with workers of the majority nationality. Its precisely here that the deep chauvinism lies. This applies not only to how people think about it but also in how interests are framed. The alleged interests of the majority of one people in the multiracial U.S. nation are identified with the interests of the entire class.

The term white left nationalism is an oxymoron, a contradiction in terms. Why? Because it identifies the interests of the majority nationality with the interests of the country as whole, superseding class interests or even general democratic demands. But white Americans as a people do not in general share interests separate from the multinational United States. This is because a) there are class divisions in the white population and b) white folks do not face special forms of discrimination because they are white. For this reason, the real interests of the majority of white Americans, who, by the way are also workers, lie with the rest of the countrys workers and multi-racial and multi-national peoples, and not with the minority white bosses.

This can more readily be seen with the term white nationalism so widely used today. However, there is no white nation as such in our country. Obviously, there is a white identity forged from various Euro-American nationality groups in no small part over and against people of color that grew out of attempts to justify capitalisms racial-social division of labor. Here, the majority white nationality was urged to participate in the subjugation of other oppressed peoples by posing a false all-class us-against-them unity. An identity conceived and rationalized in this way can only be anti-democratic and right-wing, a nationalism that always assumes the form of the chauvinism of its ruling class. Chauvinist slogans like Make America Great Again, America First, The American Century, and Law and Order are cases in point.

Thats one side of the equation.

At the same time, theres always been an anti-racist, working-class, and democratic component in this emerging nationality grouping, often latent and submerged but now and again emerging to fight the good fight, a stand seen most recently in the mass movement protesting the Breonna Taylor and George Floyd murders. As its democratic character grows, deepens, and takes on consistent working-class positions, it becomes not left nationalism but anti-racist proletarian internationalism.

As a political trend, left nationalism does indeed exist and can play a progressive role, but only in situations involving racially and nationally oppressed peoples. Taken out of that context, it turns into its opposite, as seen in various calls for a so-called patriotic socialism.

In the case of oppressing nations, as Lenin once acutely observed, nationalism is always backward and reactionary, a relic that in his words should be shelved for observation in a museum or zoo.

Thus the fight for class unity imposes on white workers the imperative of addressing the special oppression that exists against others in our multi-racial, multi-national, multi-gender working class.

Confusion on the left

Below are some examples of how these issues manifest:

1. 74 million people voted for Trump, which means a lot of workers support fascism in this country. We need to organize these people at their rallies and events, an anonymous conversation with a new CPUSA member.

The fact that tens of millions of people voted for an extreme-right candidate like Trump does not mean the entire working class supports the fascist-like policy of certain sections of the ruling class. It does mean that certain sections of the population in particular, the white petit bourgeoisie, class collaborators who support racist policy and have romantic intentions of becoming the monopolists support reaction.

The fact that some working people voted for a fascist does not mean we need to go to Trump rallies. Not only would we be setting ourselves up for provocations, but its likely that such efforts would be self-defeating. It does mean that we, in our places of work, school, and communities, work to build unity of action on the issues to win people whether influenced by Trumpism or not over to the struggle against racism and white supremacy.

In Black and WhiteOne Class, One Fight, Henry Winston noted,

The Communist Party helped make a lasting contribution to the history of the United States when, in 1928, and two years later in 1930, it adopted resolutions on the struggle for Black Liberation which opened up new vistas for the total struggle for democracy and its extension, and for the fight for economic, political and social equality for the Black people in the U.S.

These were resolutions to be fought for not alone by Black Communists. They were, above all else, documents to guide the Party as a whole and, in the first place, white Communists for work among the white masses, to win them for the struggle against the chief source of Black oppression, which was, and remains, the monopolies.

That is why one of the main tenets of the Party in such a struggle has always been that white Communists should be among the first to challenge those monopolists and apologists for the monopolies who justify the special oppression of Black workers.

2. January 6 was a good thing! White workers led that uprising! We need to be organizing January 6 people! (paraphrased from anonymous article by a new CPUSA member and an anonymous email sent to the DC District during the J6 events).

Those who hold such positions are confused about the class makeup involved in the J6 insurrection. Our district in Washington, D.C., clearly noted that the different forces involved included the likes of the Proud Boys, Oath Keepers, Three Percenters, American Firsters, the Boogaloo movement, Turning Point USA, Falun Gong cultists, Q-Anon conspiracy theorists, reactionary Cubans, Vietnamese, and Hong Kong and Tibetan separatists.

It also included petty bourgeois forces like real estate developers, former intelligence agents, right-wing politicians, professional managers, and small business owners. A small section of it was working class. Forces within the Capitol Police and Republican Party played a major role in allowing fascists to enter the Capitol to potentially murder sitting members of Congress. There was no revolutionary character to this insurrection, as it was financed and provoked by reactionary sections of the ruling class and the fascist street thugs that carry water for them.

3. The Biden administration is identical to Trumps. The recent Republican victories are good for the working class so the Democratic Party will die once and for all! The popular front is dead! We need a true working-class party representative of our people!

This statement completely ignores the social makeup and correlation of forces that tend to vote for the Democrat or Republican parties. While it is objectively true that the Democrat and Republican parties are both backed by ruling-class interests and do not represent the interests of the working class, it does not mean that there are no differences between them. The two corporate, duopolist parties represent two factions within the imperialist ruling class, with one tending toward fascism and the other being open to small minimal capitalist reforms (supporting policy on climate change, voting rights, etc.). Consider the following from Lenins Left Wing Communism: An Infantile Disorder:

The more powerful enemy can be conquered only by exerting the utmost effort, and by necessarily, thoroughly, carefully, attentively and skillfully taking advantage of every, even the smallest rift among the enemies, of every antagonism of interest among the bourgeoisie of the various countries and among the various groups or types of bourgeoisie within the various countries, by taking advantage of every, even the smallest, opportunity of gaining a mass ally, even though this ally be temporary, vacillating, unstable, unreliable and conditional. Those who do not understand this do not understand even a particle of Marxism, or of scientific, modern Socialism in general. (emphasis in the original)

What Lenin said above is true of united front politics in general. Our role as the CPUSA is to apply the Communist plus as we engage in mass struggle on issues. And while doing so, we must build sustaining coalitions that bring together a large coalition of forces. Take for example the recent victory in Chicago, the adoption of the Empowering Communities for Public Safety ordinance, fought for by the Chicago Alliance Against Racist and Political Repression. This mass coalition organizes around the issues of racism and police violence (which are linked), involving labor unions, churches, cultural/nationality groups, community organizations, Chicago aldermen, and more. They would have never achieved victory if it were not for the hard work of organizing this mass effort.

Though reforms may give illusions about the capitalist system, radical reforms can also expose the limitations of the system and lead to greater consciousness of the need to change it and fight for socialism.

On the other hand, sectarian politics are a dead end and a recipe for defeat. One example of this is the local D.C. Cuba Solidarity Committee, which has been unable to pass a resolution denouncing the blockade on Cuba because it is wrapped in ultra-left verbiage that will never pass through a Democratic-controlled city council. Sectarianism is an ultra-left tendency that separates conscious forces from the rest of the masses of people. The CPUSA was at its largest at the height of the popular front against fascism in the early 1940s. After this period and following the McCarthy period, the party continued this policy by developing formations such as NAIMSAL and NAARPR. This energy is needed today.

As Georgi Dimitrov brilliantly stated at the 7th Congress of the Communist International, Whoever does not fight the reactionary measures of the bourgeoisie and the growth of fascism at these preparatory stages is not in a position to prevent the victory of fascism, but, on the contrary, facilitates that victory (emphasis in the original).

4. By calling the Republican Party fascist, we lose white workers for our movement. We need to organize them!

If we are afraid to name our enemies, then we are disarming our class. The GOP is not yet an openly fascist party, but there are clearly fascist-minded people in and leading it. If its current trajectory is not halted, that is what it will become. And while its true that little is accomplished by yelling fascist at folks, its also true that tactics are needed for raising issues in ways that point out the fascist danger inherent in todays Republican Party. This is particularly the case after January 6th. This includes using the F word. Thus the issue is not whether to say it, but how and when.

To continue with Dimitrov:

Fascism not only inflames prejudices that are deeply ingrained in the masses, but also plays on the better sentiments of the masses, on their sense of justice and sometimes even on their revolutionary traditions. . . .

Fascism aims at the most unbridled exploitation of the masses but it approaches them with the most artful anticapitalist demagogy, taking advantage of the deep hatred of the working people against the plundering bourgeoisie, the banks, trusts and financial magnates, and advancing those slogans which at the given moment are most alluring to the politically immature masses. . . .

Fascism is a most ferocious attack by capital on the mass of working people;Fascism is unbridled chauvinism and predatory war;Fascism is rabid reaction and counter-revolution;Fascism is the most vicious enemy of the working class and of all working people. (emphasis in the original)

How do we stop this march toward fascist victory? By forming a united front which is establishing unity of action of the workers in every factory, every district, in every region, in every country, all over the world. Unity of action of the proletariat on a national and international scale is the mighty weapon which renders the working class capable not only of successful defense but also of successful counterattack against fascism, against the class enemy.

Comrades, lets struggle against the march toward fascism in this country, and not contribute to its victory, which will end us all!

Image: D is for.320/365 by AndYaDontStop is licensed under CC BY 2.0).

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The curious rise of white left nationalism Communist Party USA - Communist Party USA

What Can We Do with a Quantum Computer? – Ideas …

When I was in middle school, I read a popular book about programming in BASIC (which was the most popular programming language for beginners at that time). But it was 1986, and we did not have computers at home or school yet. So, I could only write computer programs on paper, without being able to try them on an actual computer.

Surprisingly, I am now doing something similarI am studying how to solve problems on a quantum computer. We do not yet have a fully functional quantum computer. But I am trying to figure out what quantum computers will be able to do when we build them.

The story of quantum computers begins in 1981 with Richard Feynman, probably the most famous physicist of his time. At a conference on physics and computation at the Massachusetts Institute of Technology, Feynman asked the question: Can we simulate physics on a computer?

The answer wasnot exactly. Or, more preciselynot all of physics. One of the branches of physics is quantum mechanics, which studies the laws of nature on the scale of individual atoms and particles. If we try to simulate quantum mechanics on a computer, we run into a fundamental problem. The full description of quantum physics has so many variables that we cannot keep track of all of them on a computer.

If one particle can be described by two variables, then to describe the most general state of n particles, we need 2n variables. If we have 100 particles, we need 2100 variables, which is roughly 1 with 30 zeros. This number is so big that computers will never have so much memory.

By itself, this problem was nothing newmany physicists already knew that. But Feynman took it one step further. He asked whether we could turn this problem into something positive: If we cannot simulate quantum physics on a computer, maybe we can build a quantum mechanical computerwhich would be better than the ordinary computers?

This question was asked by the most famous physicist of the time. Yet, over the next few years, almost nothing happened. The idea of quantum computers was so new and so unusual that nobody knew how to start thinking about it.

But Feynman kept telling his ideas to others, again and again. He managed to inspire a small number of people who started thinking: what would a quantum computer look like? And what would it be able to do?

Quantum mechanics, the basis for quantum computers, emerged from attempts to understand the nature of matter and light. At the end of the nineteenth century, one of the big puzzles of physics was color.

The color of an object is determined by the color of the light that it absorbs and the color of the light that it reflects. On an atomic level, we have electrons rotating around the nucleus of an atom. An electron can absorb a particle of light (photon), and this causes the electron to jump to a different orbit around the nucleus.

In the nineteenth century, experiments with heated gasses showed that each type of atom only absorbs and emits light of some specific frequencies. For example, visible light emitted by hydrogen atoms only consists of four specific colors. The big question was: how can we explain that?

Physicists spent decades looking for formulas that would predict the color of the light emitted by various atoms and models that would explain it. Eventually, this puzzle was solved by Danish physicist Niels Bohr in 1913 when he postulated that atoms and particles behave according to physical laws that are quite different from what we see on a macroscopic scale. (In 1922, Bohr, who would become a frequent Member at the Institute, was awarded a Nobel Prize for this discovery.)

To understand the difference, we can contrast Earth (which is orbiting around the Sun) and an electron (which is rotating around the nucleus of an atom). Earth can be at any distance from the Sun. Physical laws do not prohibit the orbit of Earth to be a hundred meters closer to the Sun or a hundred meters further. In contrast, Bohrs model only allows electrons to be in certain orbits and not between those orbits. Because of this, electrons can only absorb the light of colors that correspond to a difference between two valid orbits.

Around the same time, other puzzles about matter and light were solved by postulating that atoms and particles behave differently from macroscopic objects. Eventually, this led to the theory of quantum mechanics, which explains all of those differences, using a small number of basic principles.

Quantum mechanics has been an object of much debate. Bohr himself said, Anyone not shocked by quantum mechanics has not yet understood it. Albert Einstein believed that quantum mechanics should not be correct. And, even today, popular lectures on quantum mechanics often emphasize the strangeness of quantum mechanics as one of the main points.

But I have a different opinion. The path of how quantum mechanics was discovered was very twisted and complicated. But the end result of this path, the basic principles of quantum mechanics, is quite simple. There are a few things that are different from classical physics and one has to accept those. But, once you accept them, quantum mechanics is simple and natural. Essentially, one can think of quantum mechanics as a generalization of probability theory in which probabilities can be negative.

In the last decades, research in quantum mechanics has been moving into a new stage. Earlier, the goal of researchers was to understand the laws of nature according to how quantum systems function. In many situations, this has been successfully achieved. The new goal is to manipulate and control quantum systems so that they behave in a prescribed way.

This brings the spirit of research closer to computer science. Alan Key, a distinguished computer scientist, once characterized the difference between natural sciences and computer science in the following way. In natural sciences, Nature has given us the world, and we just discovered its laws. In computers, we can stuff the laws into it and create the world. Experiments in quantum physics are now creating artificial physical systems that obey the laws of quantum mechanics but do not exist in nature under normal conditions.

An example of such an artificial quantum system is a quantum computer. A quantum computer encodes information into quantum states and computes by performing quantum operations on it.

There are several tasks for which a quantum computer will be useful. The one that is mentioned most frequently is that quantum computers will be able to read secret messages communicated over the internet using the current technologies (such as RSA, Diffie-Hellman, and other cryptographic protocols that are based on the hardness of number-theoretic problems like factoring and discrete logarithm). But there are many other fascinating applications.

First of all, if we have a quantum computer, it will be useful for scientists for conducting virtual experiments. Quantum computing started with Feynmans observation that quantum systems are hard to model on a conventional computer. If we had a quantum computer, we could use it to model quantum systems. (This is known as quantum simulation.) For example, we could model the behavior of atoms and particles at unusual conditions (for example, very high energies that can be only created in the Large Hadron Collider) without actually creating those unusual conditions. Or we could model chemical reactionsbecause interactions among atoms in a chemical reaction is a quantum process.

Another use of quantum computers is searching huge amounts of data. Lets say that we have a large phone book, ordered alphabetically by individual names (and not by phone numbers). If we wanted to find the person who has the phone number 6097348000, we would have to go through the whole phone book and look at every entry. For a phone book with one million phone numbers, it could take one million steps. In 1996, Lov Grover from Bell Labs discovered that a quantum computer would be able to do the same task with one thousand steps instead of one million.

More generally, quantum computers would be useful whenever we have to find something in a large amount of data: a needle in a haystackwhether this is the right phone number or something completely different.

Another example of that is if we want to find two equal numbers in a large amount of data. Again, if we have one million numbers, a classical computer might have to look at all of them and take one million steps. We discovered that a quantum computer could do it in a substantially smaller amount of time.

All of these achievements of quantum computing are based on the same effects of quantum mechanics. On a high level, these are known as quantum parallelism and quantum interference.

A conventional computer processes information by encoding it into 0s and 1s. If we have a sequence of thirty 0s and 1s, it has about one billion of possible values. However, a classical computer can only be in one of these one billion states at the same time. A quantum computer can be in a quantum combination of all of those states, called superposition. This allows it to perform one billion or more copies of a computation at the same time. In a way, this is similar to a parallel computer with one billion processors performing different computations at the same timewith one crucial difference. For a parallel computer, we need to have one billion different processors. In a quantum computer, all one billion computations will be running on the same hardware. This is known as quantum parallelism.

The result of this process is a quantum state that encodes the results of one billion computations. The challenge for a person who designs algorithms for a quantum computer (such as myself) is: how do we access these billion results? If we measured this quantum state, we would get just one of the results. All of the other 999,999,999 results would disappear.

To solve this problem, one uses the second effect, quantum interference. Consider a process that can arrive at the same outcome in several different ways. In the non-quantum world, if there are two possible paths toward one result and each path is taken with a probability , the overall probability of obtaining this result is += . Quantumly, the two paths can interfere, increasing the probability of success to 1.

Quantum algorithms combine these two effects. Quantum parallelism is used to perform a large number of computations at the same time, and quantum interference is used to combine their results into something that is both meaningful and can be measured according to the laws of quantum mechanics.

The biggest challenge is building a large-scale quantum computer. There are several ways one could do it. So far, the best results have been achieved using trapped ions. An ion is an atom that has lost one or more of its electrons. An ion trap is a system consisting of electric and magnetic fields, which can capture ions and keep them at locations. Using an ion trap, one can arrange several ions in a line, at regular intervals.

One can encode 0 into the lowest energy state of an ion and 1 into a higher energy state. Then, the computation is performed using light to manipulate the states of ions. In an experiment by Rainer Blatts group at the University of Innsbruck, Austria, this has been successfully performed for up to fourteen ions. The next step is to scale the technology up to a bigger number of trapped ions.

There are many other paths toward building a quantum computer. Instead of trapped ions, one can use electrons or particles of lightphotons. One can even use more complicated objects, for example, the electric current in a superconductor. A very recent experiment by a group led by John Martinis of the University of California, Santa Barbara, has shown how to perform quantum operations on one or two quantum bits with very high precision from 99.4% to 99.92% using the superconductor technology.

The fascinating thing is that all of these physical systems, from atoms to electric current in a superconductor, behave according to the same physical laws. And they all can perform quantum computation. Moving forward with any of these technologies relates to a fundamental problem in experimental physics: isolating quantum systems from environment and controlling them with high precision. This is a very difficult and, at the same time, a very fundamental task and being able to control quantum systems will be useful for many other purposes.

Besides building quantum computers, we can use the ideas of information to think about physical laws in terms of information, in terms of 0s and 1s. This is the way I learned quantum mechanicsI started as a computer scientist, and I learned quantum mechanics by learning quantum computing first. And I think this is the best way to learn quantum mechanics.

Quantum mechanics can be used to describe many physical systems, and in each case, there are many technical details that are specific to the particular physical system. At the same time, there is a common set of core principles that all of those physical systems obey.

Quantum information abstracts away from the details that are specific to a particular physical system and focuses on the principles that are common to all quantum systems. Because of that, studying quantum information illuminates the basic concepts of quantum mechanics better than anything else. And, one day, this could become the standard way of learning quantum mechanics.

For myself, the main question still is: how will quantum computers be useful? We know that they will be faster for many computational tasks, from modeling nature to searching large amounts of data. I think there are many more applications and, perhaps, the most important ones are still waiting to be discovered.

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What Can We Do with a Quantum Computer? - Ideas ...

The Year in Math and Computer Science – Quanta Magazine

Mathematicians and computer scientists had an exciting year of breakthroughs in set theory, topology and artificial intelligence, in addition to preserving fading knowledge and revisiting old questions. They made new progress on fundamental questions in the field, celebrated connections spanning distant areas of mathematics, and saw the links between mathematics and other disciplines grow. But many results were only partial answers, and some promising avenues of exploration turned out to be dead ends, leaving work for future (and current) generations.

Topologists, who had already had a busy year, saw the release of a book this fall that finally presents, comprehensively, a major 40-year-old work that was in danger of being lost. A geometric tool created 11 years ago gained new life in a different mathematical context, bridging disparate areas of research. And new work in set theory brought mathematicians closer to understanding the nature of infinity and how many real numbers there really are. This was just one of many decades-old questions in math that received answers of some sort this year.

But math doesnt exist in a vacuum. This summer, Quanta covered the growing need for a mathematical understanding of quantum field theory, one of the most successful concepts in physics. Similarly, computers are becoming increasingly indispensable tools for mathematicians, who use them not just to carry out calculations but to solve otherwise impossible problems and even verify complicated proofs. And as machines become better at solving problems, this year has also seen new progress in understanding just how they got so good at it.

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The Year in Math and Computer Science - Quanta Magazine

Five Eyes Issue Joint Log4Shell Advisory: Agencies Strongly Urge All Organizations Take Immediate Action to Protect their Networks – OODA Loop

The Five Eyes intelligence allies government agencies in the United States, United Kingdom, Australia, Canada, and New Zealand issued a joint Cybersecurity advisory (CSA) days before the Christmas holiday, offering guidance for the Apache Log4j vulnerability worldwide. Nation-states and ransomware gangs are already starting to exploit the vulnerabilities, including Log4Shell (part of the Log4j software library).

The international intelligence agencies issuing the advisory includes CISA, along with the Federal Bureau of Investigation (FBI), National Security Agency (NSA), Australian Cyber Security Centre (ACSC), Canadian Centre for Cyber Security (CCCS), Computer Emergency Response Team New Zealand (CERT NZ), New Zealand National Cyber Security Centre (NZ NCSC), and the United Kingdoms National Cyber Security Centre (NCSC-UK).

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Five Eyes Issue Joint Log4Shell Advisory: Agencies Strongly Urge All Organizations Take Immediate Action to Protect their Networks - OODA Loop