Quantum Computing News and Discussions

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Roadmap to 10000 Qubit Fault Tolerant Quantum Computer
March 12, 2024 by Brian Wang

https://www.nextbigfuture.com/2024/03/r ... puter.html

PASQAL, a leader in neutral atoms quantum computing, is releasing a significant technology roadmap today.

Key highlights will include:
Scaling Up: Roadmap targets 10,000 qubits by 2026, progression towards fault-tolerant systems.
Customer Focus: Devices already in the hands of end-users (100+ qubits), driving software development.
Promising Research: Recent advances demonstrate potential for quantum error correction (QEC) with neutral atoms.
Customer Driven: Technology roadmap directly informed by commercial partner needs.
International Expansion: Collaboration hubs in France, Canada, and Korea link industry and academia.
Rapid Growth: Trajectory from startup to multinational, with 8 global offices and manufacturing in France and Canada.

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Elegant use of noise for quantum computing
https://phys.org/news/2024-03-elegant-n ... antum.html
by Niels Bohr Institute

Scientists around the world work hard to rinse quantum systems for noise, which may disturb the function of tomorrow's powerful quantum computers. Researchers from the Niels Bohr Institute (NBI) have found a way to use noise to process quantum information. This raises the performance of the quantum computing unit, the qubit.

An international collaboration led by scientists at the Niels Bohr Institute (NBI), University of Copenhagen, has demonstrated an alternative approach. Their method allows to use noise to process quantum information. As a result, the performance of the fundamental quantum computing unit of information, the qubit, is increased by 700%.

These results are published in the journal Nature Communications.

"Avoiding noise in quantum systems has proven difficult, since almost any change in the environment can spoil things. For instance, your system may be operating at a given magnetic or electric field, and if that field changes just slightly the quantum effects fall apart.

"We suggest a completely different approach. Instead of getting rid of noise, we use continuous real-time noise surveillance and adapt the system as changes in the environment happen," says Ph.D. Researcher at NBI Fabrizio Berritta, lead author on the study.

The new approach is possible thanks to recent developments in several high-tech fields.

"Previously, say 20 years ago, it would have been possible to visualize the fluctuations after the experiment, but it would have been too slow to utilize this information during the actual experiment. We use FPGA [field-programable-gate-array] technology to get the measurements in real time. And further, we use machine learning to speed up the analysis," explains Berritta.

"The whole idea is to get the measurements and do the analysis in the same microprocessor that adjusts the system in real time. Else, the scheme would not be fast enough for quantum computing applications."

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Quantinuum quantum computer using Microsoft's 'logical quantum bits' runs 14,000 experiments with no errors
https://phys.org/news/2024-04-quantinuu ... -bits.html
by Bob Yirka , Phys.org

A team of computer engineers from quantum computer maker Quantinuum, working with computer scientists from Microsoft, has found a way to greatly reduce errors when running experiments on a quantum computer. The combined group has published a paper describing their work and results on the arXiv preprint server.

Computer scientists have been working for several years to build a truly useful quantum computer that could achieve quantum supremacy. Research has come a long way, most of which has involved adding more qubits.

But such research has been held up by one main problem—quantum computers make a lot of errors. To overcome this problem, researchers have been looking for ways to reduce the number of errors or to correct those that are made before results are produced.

One of the companies working on reducing errors is Microsoft, and their chief focus has been on designing and using logical quantum bits through what they describe as "active syndrome extraction"—where a few logical qubits are created using multiple physical qubits. The system as a whole is described by the team as a qubit virtualization system.

[Time_Traveller]

Future quantum computers will be no match for 'space encryption' that uses light to beam data around — with the 1st satellite launching in 2025

published yesterday



By converting data into light particles and beaming them around the world using satellites, we could prevent encrypted messages from being intercepted by a superpowerful quantum computer, scientists claim.

Currently, messaging technology relies on mathematical, or cryptographic, methods of protection, including end-to-end encryption. This technology is used in WhatsApp — as well as by corporations, the government and the military — to protect sensitive data from being intercepted.

Encryption works by scrambling data or text into what appears to be nonsense, using an algorithm and a key that only the sender and recipient can use to unlock the data. These algorithms can, in theory, be cracked. But they are designed to be so complex that even the fastest supercomputers would take millions of years to translate the data into something readable.

Quantum computers change the equation. Although the field is young, scientists predict that such machines will be powerful enough to easily break encryption algorithms someday. This is because they can process exponentially greater calculations in parallel (depending on how many qubits they use), whereas classical computers can process calculations only in sequence.

Fearing that quantum computers will render encryption obsolete someday, scientists are proposing new technologies to protect sensitive communications. One field, known as "quantum cryptography," involves building systems that can protect data from encryption-beating quantum computers.

https://www.space.com/quantum-computers ... -satellite

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New advances promise secure quantum computing at home
https://phys.org/news/2024-04-advances- ... -home.html
by University of Oxford

The full power of next-generation quantum computing could soon be harnessed by millions of individuals and companies, thanks to a breakthrough by scientists at Oxford University Physics guaranteeing security and privacy. This advance promises to unlock the transformative potential of cloud-based quantum computing and is detailed in a new study published in Physical Review Letters. The paper is titled "Verifiable blind quantum computing with trapped ions and single photons."

Quantum computing is developing rapidly, paving the way for new applications that could transform services in many areas like health care and financial services. It works in a fundamentally different way than conventional computing and is potentially far more powerful. However, it currently requires controlled conditions to remain stable and there are concerns around data authenticity and the effectiveness of current security and encryption systems.

[firestar464]

"mom, can we have quantum computing?"

"we have it at home already"

"wait what? yippee"

[firestar464]

Crucial connection for 'quantum internet' made for the first time

https://phys.org/news/2024-04-crucial-q ... ernet.html

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