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Summary: A team at Helmholtz-Zentrum Dresden-Rossendorf has introduced a groundbreaking quantum computing technique using magnons to manage qubits. Their research, broadening the horizons of quantum technology, might vastly improve computers capabilities and make them more scalable.

In a significant stride toward advanced quantum computing, researchers from the Helmholtz-Zentrum Dresden-Rossendorf have devised a novel approach to control and manage quantum bits, or qubitsfundamental units of quantum computers. This technique diverges from the traditional electromagnetic methods, and instead, harnesses magnons, which are disturbances within a magnetic field, to interact with qubits through a material known as silicon carbide.

The innovation sets itself apart by using the magnetic interactions in a nickel-iron alloy magnetic disk to manipulate qubits, side-stepping the limitations of current microwave antenna technologies. By employing magnons shorter wavelengths, the promise of denser and more powerful quantum computer architectures comes within reach. The results of this burgeoning research were published in Science Advances, detailing how magnons could serve as a new quantum bus, interfacing directly with the spin qubits that store quantum information.

While research is still underway to test the practical application of this method in quantum computing, the implications are vast. The potential for controlling numerous qubits and enabling their entanglement could revolutionize industries by providing more efficient cryptographic techniques and accelerating drug discovery processes.

With quantum computing still in its nascency, overcoming challenges such as error correction and the creation of stable qubit networks remains paramount. However, the Helmholtz-Zentrum Dresden-Rossendorfs breakthrough hints at an alternative pathway that mitigates some of these fundamental issues.

The progress made with magnons marks a crucial development towards viable, large-scale quantum computingan essential leap forward in technology that could reshape how we tackle the worlds most complex computational challenges.

Industry watchers point to agencies like the U.S. National Institute of Standards and Technology and The European Quantum Flagship initiative for up-to-date research and progress reports in this rapidly innovative field. These efforts underscore the increasing importance and potential impact of quantum computing on multiple sectors, from security to healthcare.

The discovery by the team at Helmholtz-Zentrum Dresden-Rossendorf of using magnons to manipulate qubits represents a potential paradigm shift for the quantum computing industryan industry that is still very much in its experimental and developmental stages but holds huge potential for transformative change across numerous fields.

Market Forecasts and Industry Growth Market forecasts for quantum computing are robust, with predictions of significant growth over the coming decades as the technology matures and becomes more commercially available. Analysts at companies like Gartner and MarketsandMarkets have projected that the quantum computing market could be worth billions of dollars in the ensuing decade. This optimism is based on advancements in quantum technologies and the increasing interest from governments and private sector participants in harnessing the power of quantum computers.

The quantum computing industry seeks to leverage the principles of quantum mechanics to perform calculations at speeds unattainable by traditional computers. This capability has the potential to transform industries by solving complex problems in fields such as cryptography, financial modeling, drug discovery, and logistics. Given its nascent stage, quantum computing attracts significant investments both from venture capitalists and public sector funds aimed at achieving strategic technological advantages.

Issues and Challenges Despite its promising outlook, the quantum computing industry faces numerous challenges that need to be addressed. Creating stable and scalable qubit systems, error correction, and developing a skilled workforce proficient in quantum technologies are among the hurdles the industry is grappling with. Furthermore, quantum computing is not immune to ethical and security concerns, especially considering the implications it has for breaking current encryption schemes used to protect data.

The development of new techniques like the one involving magnons presents a potential solution to some of these problems, especially related to the scalability and control of qubits. Nonetheless, the transition from groundbreaking research to practical application involves a significant amount of work and collaboration across various disciplines.

For those interested in keeping track of the latest advancements and industry trends, visiting the official websites of leading organizations and research institutions is advisable. You can refer to prominent agencies such as The U.S. National Institute of Standards and Technology or European research initiatives such as The European Quantum Flagship to obtain recent information and progress reports on quantum computing and quantum technologies.

The integration of magnons into quantum computing architectures is still a developing story, but it highlights the innovative spirit and continued evolution of this cutting-edge field. With ongoing research and development, quantum computing is poised to become a cornerstone of next-generation computing technology with the power to redefine our approach to solving the worlds most complex problems.

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In the quest to develop quantum computers and networks, there are many components that are fundamentally different than those used today. Like a modern computer, each of these components has different constraints. However, it is currently unclear what materials can be used to construct those components for the transmission and storage of quantum information.

In new research published in the Journal of the American Chemical Society, University of Illinois Urbana Champaign materials science & engineering professor Daniel Shoemaker and graduate student Zachary Riedel used density functional theory (DFT) calculations to identify possible europium (Eu) compounds to serve as a new quantum memory platform. They also synthesized one of the predicted compounds, a brand new, air stable material that is a strong candidate for use in quantum memory, a system for storing quantum states of photons or other entangled particles without destroying the information held by that particle.

The problem that we are trying to tackle here is finding a material that can store that quantum information for a long time. One way to do this is to use ions of rare earth metals, says Shoemaker.

Found at the very bottom of the periodic table, rare earth elements, such as europium, have shown promise for use in quantum information devices due to their unique atomic structures. Specifically, rare earth ions have many electrons densely clustered close to the nucleus of the atom. The excitation of these electrons, from the resting state, can live for a long timeseconds or possibly even hours, an eternity in the world of computing. Such long-lived states are crucial to avoid the loss of quantum information and position rare earth ions as strong candidates for qubits, the fundamental units of quantum information.

Normally in materials engineering, you can go to a database and find what known material should work for a particular application, Shoemaker explains. For example, people have worked for over 200 years to find proper lightweight, high strength materials for different vehicles. But in quantum information, we have only been working at this for a decade or two, so the population of materials is actually very small, and you quickly find yourself in unknown chemical territory.

Shoemaker and Riedel imposed a few rules in their search of possible new materials. First, they wanted to use the ionic configuration Eu3+ (as opposed to the other possible configuration, Eu2+) because it operates at the right optical wavelength. To be written optically, the materials should be transparent. Second, they wanted a material made of other elements that have only one stable isotope. Elements with more than one isotope yield a mixture of different nuclear masses that vibrate at slightly different frequencies, scrambling the information being stored. Third, they wanted a large separation between individual europium ions to limit unintended interactions. Without separation, the large clouds of europium electrons would act like a canopy of leaves in a forest, rather than well-spaced-out trees in a suburban neighborhood, where the rustling of leaves from one tree would gently interact with leaves from another.

With those rules in place, Riedel composed a DFT computational screening to predict which materials could form. Following this screening, Riedel was able to identify new Eu compound candidates, and further, he was able to synthesize the top suggestion from the list, the double perovskite halide Cs2NaEuF6. This new compound is air stable, which means it can be integrated with other components, a critical property in scalable quantum computing. DFT calculations also predicted several other possible compounds that have yet to be synthesized.

We have shown that there are a lot of unknown materials left to be made that are good candidates for quantum information storage, Shoemaker says. And we have shown that we can make them efficiently and predict which ones are going to be stable.

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Design rules and synthesis of quantum memory candidates - Newswise

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One promising solution to some of humanitys most difficult issues may come from quantum computing. Although quantum information computation has received a lot of attention, information transmission within quantum networks is just as important to realize the promise of this emerging technology.

Now, a team of researchers from Helmholtz-Zentrum Dresden-Rossendorf (HZDR) in Germany has developed a novel method of transducing quantum information in response to this need.

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