Microsoft says new quantum chip 1,000 times more reliable than predecessor
Summary
Microsoft announced that its new quantum chip, called Majorana 2, is 1,000 times more reliable than its previous version. This improvement helps bring the company closer to building a quantum computer that can solve useful commercial problems within a few years.Key Facts
- The Majorana 2 chip’s qubits last about 20 seconds, compared to milliseconds in the earlier chip.
- Microsoft aims to have a commercial quantum computer by 2029.
- The current Majorana 2 chip has 12 qubits, but a future useful machine would need millions.
- Microsoft uses a “topological” approach involving a special particle called a Majorana quasi-particle predicted in the 1930s.
- Microsoft faced skepticism in the past, including a retracted 2018 research paper.
- The company collaborates with the US defense agency Darpa for validation of its quantum technology.
- Experts find Microsoft’s timeline plausible but want more published details and peer-reviewed research.
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