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Successful demonstration of a superconducting circuit for qubit control within large-scale quantum computer systems

TOKYO, June 3, 2024 - (JCN Newswire) - In support of the development of large-scale superconducting quantum computers, researchers with the National Institute of Advanced Industrial Science and Technology (AIST), one of the largest public research organizations in Japan, in collaboration with Yokohama National University, Tohoku University, and NEC Corporation, proposed and successfully demonstrated a superconducting circuit that can control many qubits at low temperature.

To realize a practical quantum computer, it is necessary to control the state of a huge number of qubits (as many as one million) operating at low temperature. In conventional quantum computers, microwave signals for controlling qubits are generated at room temperature and are individually transmitted to qubits at low temperature via different cables. This results in numerous cables between room and low temperature and limits the number of controllable qubits to approximately 1,000.In this study, a superconducting circuit that can control multiple qubits via a single cable using microwave multiplexing was successfully demonstrated in proof-of-concept experiments at 4.2 K in liquid helium. This circuit has the potential of increasing the density of microwave signals per cable by approximately 1,000 times, thereby increasing the number of controllable qubits significantly and contributing to the development of large-scale quantum computers.The above results will be published in "npj Quantum Information" on June 3 at 10 a.m. London time.

Article InformationJournal: npj Quantum Information Title: Microwave-multiplexed qubit controller using adiabatic superconductor logic Authors: Naoki Takeuchi, Taiki Yamae, Taro Yamashita, Tsuyoshi Yamamoto, and Nobuyuki Yoshikawa DOI: 10.1038/s41534-024-00849-2

About NEC Corporation

NEC Corporation has established itself as a leader in the integration of IT and network technologies while promoting the brand statement of Orchestrating a brighter world. NEC enables businesses and communities to adapt to rapid changes taking place in both society and the market as it provides for the social values of safety, security, fairness and efficiency to promote a more sustainable world where everyone has the chance to reach their full potential. For more information, visit NEC at https://www.nec.com.

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Successful demonstration of a superconducting circuit for qubit control within large-scale quantum computer systems - JCN Newswire

By Ken Briodagh

Senior Technology Editor

Embedded Computing Design

May 30, 2024

News

According to a recent release, NXP Semiconductors has partnered with eleQtron and ParityQC, with theQSea consortiumof theDLR Quantum Computing Initiative (DLR QCI), to create what is reportedly the first full-stack, ion-trap based quantum computer demonstrator made entirely in Germany. The new quantum computer demonstrator is in Hamburg.

Hamburg is one of our most important R&D locations. We are proud that, together with DLR and our partners eleQtron and ParityQC, we are able to present the first ion-trap based quantum computer demonstrator developed entirely in Germany, said Lars Reger, CTO at NXP Semiconductors. We are convinced that industry and research communities in Hamburg and throughout Germany will benefit from this project. It will help to build up and expand important expertise in quantum computing, to use it for the economic benefit of us all, and also to further strengthen our digital sovereignty in Germany and the EU.

The goal of this demonstrator is to enable early access to quantum computing resources and help companies and research teams leverage it for applications like climate modeling, global logistics and materials sciences, the companies said.

DLR QCI says it aims to build necessary skills by creating a quantum computing ecosystem in which economy, industry and science cooperate closely to fully leverage the potential of this technology. Quantum computers are expected to tackle complex problems across industries, and will likely dramatically change the cybersecurity landscape.

NXP, eleQtron and ParityQC have used their expertise to build this ion-trap based quantum computer demonstrator by combining eleQtrons MAGIC hardware, ParityQC architecture, and NXP chip design and technology. To speed innovation and iteration, they have also developed a digital twin, which reportedly will be used to help this QSea I demonstrator to evolve to a quantum computer with a modular architecture, scalable design, and error correction capabilities. That evolution will be the goal of the ongoing work with the project.

The demonstrator is set up at the DLR QCI Innovation Center in Hamburg and will be made available to industry partners and DLR research teams, the release said. The three partners and the DLR QCI say they aim to foster and strengthen the development of an advanced quantum computing ecosystem in Germany.

To achieve a leading international position in quantum computing, we need a strong quantum computing ecosystem. Only together will research, industry and start-ups overcome the major technological challenges and successfully bring quantum computers into application. The QSea I demonstrator is an important step for the DLR Quantum Computing Initiative and for Hamburg. It enables partners from industry and research to run quantum algorithms on real ion trap qubits in a real production environment for the first time. This hands-on experience will enable them to leverage the advantages of quantum computers and become part of a strong and sovereign quantum computing ecosystem in Germany and Europe, said Dr.-Ing. Robert Axmann, Head of DLR Quantum Computing Initiative (DLR QCI).

Ken Briodagh is a writer and editor with two decades of experience under his belt. He is in love with technology and if he had his druthers, he would beta test everything from shoe phones to flying cars. In previous lives, hes been a short order cook, telemarketer, medical supply technician, mover of the bodies at a funeral home, pirate, poet, partial alliterist, parent, partner and pretender to various thrones. Most of his exploits are either exaggerated or blatantly false.

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NXP, eleQtron and ParityQC Reveal Quantum Computing Demonstrator - Embedded Computing Design

Entanglement is a key part ofquantum computing

Bartlomiej K. Wroblewski/Alamy

While scientists generally try to find sensible explanations for weird phenomena, quantum entanglement has them tied in knots.

This link between subatomic particles, in which they appear to instantly influence one another no matter how far apart, defies our understanding of space and time. It famously confounded Albert Einstein, who dubbed it spooky action at a distance. And it continues to be a source of mystery today. These quantum correlations seem to appear somehow from outside space-time, in the sense that there is no story in space and time that explains them, says Nicolas Gisin at the University of Geneva, Switzerland.

But the truth is that, as physicists have come to accept the mysterious nature of entanglement and are using it to develop new technologies, they are doubtful that it has anything left to tell us about how the universe works.

You can create quantum entanglement between particles by bringing them close together so that they interact and their properties become intertwined. Alternatively, entangled particles can be created together in a process such as photon emission or the spontaneous breakup of a single particle such as a Higgs boson.

The spooky thing is that, in the right conditions, if you then send these particles to opposite sides of the universe, performing a measurement on one will instantaneously affect the outcome of a measurement on the other, despite the fact that there can be no information exchanged between them.

For Einstein,

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How quantum entanglement really works and why we accept its weirdness - New Scientist

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Dont miss out on this exceptional chance to invest in quantum computing stocks to buy that could be millionaire makers while their valuations remain low. These innovative tech companies are developing cutting-edge quantum computing systems with the potential to generate massive returns for investors who get in early.

The quantum computing stocks featured below are poised to commercialize their technology across multiple industries. Quantum computing promises to transform various sectors of our world, from financial services to medical research. Also, it may enable groundbreaking advances and discoveries that arent possible with traditional classical computing.

The three quantum computing stocks to buy outlined in this article represent the best opportunities investors have to compound their wealth to seven figures. Weve only just started to see the potential of this industry and understand the implications of this new tech.

So, here are three quantum computing stocks for investors who want to earn a potential seven-figure sum.

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Hewlett Packard Enterprise (NYSE:HPE) focuses on IT and quantum computing through its Intelligent Edge segment. The company has demonstrated significant achievements in quantum computing research.

HPEs Intelligent Edge segment provides solutions that bring computation closer to the data source. Integrating quantum computing capabilities with Intelligent Edge technologies can offer unique advantages, such as real-time data processing and enhanced decision-making capabilities at the networks edge.

Most recently, the Intelligent Edge segment reported revenue of $902 million, an increase of 9% year-over-year. This segment continues to grow, driven by strong demand for edge computing solutions. The company also achieved an EPS of $0.48, which surpassed the consensus estimate of $0.45. This compares to an EPS of $0.63 in the same quarter of the previous year.

HPE is a well-known brand akin to a more modern version of IBM (NYSE:IBM). It could be a good pick for those who like to stay with the blue-chip options while also having the potential to mint new millionaires.

IonQ (NYSE:IONQ) is a leader in developing trapped-ion quantum computers and making significant strides in the field. The company collaborates with major cloud platforms.

IonQs primary technology involves trapped-ion quantum computers, which utilize ions trapped in electromagnetic fields as qubits. This technology is known for its high-fidelity operations and stability.

Recently, IonQ achieved a milestone of 35 algorithmic qubits with its IonQ Forte system, a year ahead of schedule. This achievement allows the system to handle more sophisticated and more extensive quantum circuits. IonQs growth and technological advancements have been recognized in various industry lists, such as Fast Companys 2023 Next Big Things in Tech List and Deloittes 2023 Technology Fast 500 List.

With a market cap of just 1.79 billion, it remains a small-cap quantum computing stock that could hold significant upside potential for investors. Its developments so far have been promising, and it could prove to be a company that will make early investors rich.

Pure-play quantum computing company Rigetti Computing (NASDAQ:RGTI) is known for its vertically integrated approach. This includes designing and manufacturing quantum processors.

Rigetti has achieved a significant milestone with its 128-qubit chip, which promises to advance quantum computing capabilities and enable new applications. This development is a key part of Rigettis roadmap to scale up quantum systems and improve performance metrics.

Also, in Q1 2024, Rigetti reported a 99.3% median 2-qubit gate fidelity on its 9-qubit Ankaa-class processor. This high level of fidelity is crucial for reliable quantum computations and positions Rigetti well against competitors.

The market cap of RGTI is a fraction of IONQs at just under 200 million at the time of writing. Its progress is similarly impressive, so it could hold significant upside and potentially mint a new generation of millionaires with a large enough investment.

On the date of publication, Matthew Farley did not have (either directly or indirectly) any positions in the securities mentioned in this article. The opinions expressed are those of the writer, subject to the InvestorPlace.com Publishing Guidelines.

Matthew started writing coverage of the financial markets during the crypto boom of 2017 and was also a team member of several fintech startups. He then started writing about Australian and U.S. equities for various publications. His work has appeared in MarketBeat, FXStreet, Cryptoslate, Seeking Alpha, and the New Scientist magazine, among others.

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3 Quantum Computing Stocks to Buy Be Millionaire-Makers: May - InvestorPlace

PARIS and BOSTON, May 23, 2024 Alice & Bob, a global leader in the race for fault-tolerant quantum computing, today announced the publication of its foundational research in Nature, showcasing significant advancements in cat qubit technology.

The study, Quantum control of a cat-qubit with bit-flip times exceeding ten seconds, realized in collaboration with the QUANTIC Team (Mines Paris PSL, Ecole Normale Suprieure and INRIA), demonstrates an unprecedented improvement in the stability of superconducting qubits, marking a critical milestone towards useful fault-tolerant quantum computing.

The researchers have significantly extended the bit-flip times from milliseconds to tens of secondsthousands of times better than any other superconducting qubit type.

Quantum computers face two types of errors: bit-flips and phase-flips. Cat qubits exponentially reduce bit-flips, which are analogous to classical bit flips in digital computing. As a result, the remaining phase-flips can be addressed more efficiently with simpler error correcting codes.

The researchers used Alice & Bobs Boson 3 chipset for this record-breaking result, which features a cat qubit design named TomCat. TomCat employs an efficient quantum tomography (measurement) protocol that allows for the control of quantum states without the use of a transmon, a common circuit used by many quantum companies, but one of the major sources of bit-flips for cat qubits. This design also minimizes the footprint of the qubit on the chip, removing drivelines, cables, instruments, making this stable qubit scalable. Recently, Alice & Bob made publicly available their new Boson 4 chipset that reaches over 7 minutes of bit-flip lifetime. The results from this Nature Publication can therefore be reproduced by users on Boson 4 over Google Cloud.

Although Alice & Bobs latest Boson chips are getting closer to the company bit-flip protection targets, Alice & Bob plans to further advance their technology. The next iterations will focus on boosting the cat qubit phase-flip time and readout fidelity to reach the requirements of their latest architecture to deliver a 100 logical qubit quantum computer.

Key advances highlighted in the research include:

About Alice & Bob

Alice & Bob is a quantum computing company based in Paris and Boston whose goal is to create the first universal, fault-tolerant quantum computer. Founded in 2020, Alice & Bob has already raised 30 million in funding, hired over 95 employees and demonstrated experimental results surpassing those of technology giants such as Google or IBM. Alice & Bob specializes in cat qubits, a pioneering technology developed by the companys founders and later adopted by Amazon. Demonstrating the power of its cat architecture, Alice & Bob recently showed that it could reduce the hardware requirements for building a useful large-scale quantum computer by up to 200 times compared with competing approaches. Alice & Bob cat qubit is available for anyone to test through cloud access.

Source: Alice & Bob

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Alice & Bob's Cat Qubit Research Published in Nature - HPCwire