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Physicists are mostly unconvinced by Microsoft’s new topological quantum chip

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Summary
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85% Informative

Topological quantum computing has had a dark shadow cast upon it by a series of retracted claims.

Microsoft 's February announcement of a chip containing the first topological quantum bits ignited blowback in the physics community.

Microsoft researcher Chetan Nayak promised to provide solid evidence during his March 18 talk at the American Physical Society’s Global Physics Summit .

Microsoft ’s devices consist of aluminum nanowires, just 60 nanometers wide, laid atop a semiconductor.

When cooled, this aluminum becomes superconducting, allowing it to transmit electricity without resistance.

Once the device is tuned to particular values of magnetic field and voltage, Majoranas should theoretically appear.

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