PATRICK TUCKER
Researchers at Microsoft, with support from DARPA, say they’ve designed a quantum computer chip that could lead to artificial-intelligence tools that use far fewer computer resources and energy.
According to a Microsoft blog on the announcement and their accompanying paper, the team has developed a new way to check the state of a quantum computation without disrupting the delicate information underlying it. This technique, called interferometric single-shot parity measurement, was tested using a special combination of indium arsenide and aluminum, or InAs–Al. They’ve used that to create a chip, the Majorana 1, which Microsoft described as “the world’s first Quantum Processing Unit, QPU, powered by a topological core, designed to scale to a million qubits on a single chip.”
In simple terms, the method allows scientists to determine whether two quantum bits (qubits) are in the same state or different states—kind of like checking if two spinning coins landed on the same side—without looking at them directly. This is important because traditional ways of measuring qubits can disturb them, simply because observing or measuring processes at the quantum level can change the process or phenomenon being observed. making quantum calculations less reliable.
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