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100 Times Longer Than Previous Benchmarks – A Quantum Breakthrough

By SciTechDaily

November 7, 2022

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In the world of quantum computing, two milliseconds, or two thousandths of a second, is a very long period of time.

On these timescales, a blink of an eye — one-tenth of a second — seems like eternity.

Researchers from the University of New South Wales have now broken new ground in demonstrating that 'spin qubits', the fundamental informational units of quantum computers, can store data for up to two milliseconds. The accomplishment is 100 times longer than prior benchmarks in the same quantum processor for what is known as "coherence time," the amount of time qubits can be manipulated in increasingly complicated calculations.

"Longer coherence time means you have more time over which your quantum information is stored – which is exactly what you need when doing quantum operations," says Ph.D. student Amanda Seedhouse, whose work in theoretical quantum computing contributed to the achievement.

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