Microsoft and Quantinuum announce development of next-generation technology that reduces 'noise' by 800 times, which causes huge errors in quantum computing



Quantum computers, which are being developed for future practical use, are subject to errors at the time of writing, from setting the initial state of the quantum bits to reading the output, greatly limiting what they can do. On April 3, 2024, Microsoft and quantum computing company

Quantinuum reported that they had 'succeeded in developing a quantum computer with unprecedented levels of reliability that is 800 times less susceptible to errors than conventional physical quantum bits.'

Advancing science: Microsoft and Quantinuum demonstrate the most reliable logical qubits on record with an error rate 800x better than physical qubits - The Official Microsoft Blog
https://blogs.microsoft.com/blog/2024/04/03/advancing-science-microsoft-and-quantinuum-demonstrate-the-most-reliable-logical-qubits-on-record-with-an-error-rate-800x-better-than-physical-qubits/



Quantinuum Partners with Microsoft in New Phase of Reliable Quantum Computing with Breakthrough Demonstration of Reliable Logical Qubits

https://www.prnewswire.com/news-releases/quantinuum-partners-with-microsoft-in-new-phase-of-reliable-quantum-computing-with-breakthrough-demonstration-of-reliable-logical-qubits-302106318.html

How Microsoft and Quantinuum achieved reliable quantum computing - Microsoft Azure Quantum Blog
https://cloudblogs.microsoft.com/quantum/2024/04/03/how-microsoft-and-quantinuum-achieved-reliable-quantum-computing/

Microsoft and Quantinuum say they've ushered in the next era of quantum computing | TechCrunch
https://techcrunch.com/2024/04/03/microsoft-and-quantinuum-say-theyve-ushered-in-the-next-era-of-quantum-computing/

Quantum computers essentially use qubits to store and process information. But physical qubits are prone to errors caused by noise, severely limiting the usefulness and practicality of traditional quantum computers. To reduce these errors, sophisticated techniques have been required to combine multiple physical qubits into reliable virtual qubits called 'logical qubits.'

Once logical qubits are enabled, more physical qubits can be used to create more powerful quantum computers that can perform longer and more complex calculations.

This time, by combining Microsoft's quantum bit virtualization system with Quantinuum's ' H2 ion trap quantum bit processor ' and unique quantum charge coupling device architecture, we succeeded in combining 30 physical quantum bits into four reliable logical quantum bits. Combining multiple physical quantum bits into one logical quantum bit makes it possible to protect the system from errors. According to Microsoft, the logical quantum bit was able to run 14,000 independent instances without a single error.



In addition, it has been revealed that these logical qubits only produce one error per 100,000 executions, which is 800 times lower than the error rate achieved using only physical qubits. According to Quantinuum's Jennifer Straubrey, this '800 times lower error rate from physical qubits' is the lowest error rate ever achieved.



Microsoft said of the results, 'Listening to music with noise-canceling headphones enabled and removing most of the environmental noise is similar to applying a quantum bit virtualization system,' and likened the improvement in error rate to the silence you experience with high-quality noise-canceling headphones.

However, the research team clarified that their logical qubit is still in the development stage. 'To surpass conventional quantum computers, we need to further increase the difference in error rates between logical qubits and physical qubits, as well as the ability to correct individual circuit errors and generate quantum entanglement between at least two logical qubits,' they said.

Nevertheless, Microsoft CEO Satya Nadella praised the work, saying, 'This marks an exciting milestone on our journey to realizing the scientific and commercial advances that can come from reliable quantum computing.'




'This is a historic achievement and a great reflection of how our collaboration with Microsoft continues to push the boundaries of the quantum ecosystem,' said Ilyas Khan, founder and chief product officer at Quantinnum. 'We are excited about the potential for quantum applications to advance further with Microsoft's cutting-edge error correction capabilities aligned with the world's most powerful quantum computers and our fully integrated approach. We can't wait to see how our customers and partners benefit from Quantinnum's solutions, especially as we move to large-scale quantum processors.'

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in Software,   Hardware, Posted by log1r_ut