Chemistry in Pictures - Cooling the qubits | Chemical & Engineering News

Issue Date: October 31, 2017 | Web Date: November 2, 2017

Chemistry in Pictures - Cooling the qubits

Department: Science & Technology
Credit: Google/Erik Lucero
A device that cools Google's quantum computer.
Credit: Google/Erik Lucero

Quantum computers are divas. To get good performance out of a quantum computer, physicists need to make sure the machines’ quantum bits (aka qubits) can maintain a certain quantum state for long enough to complete a computational task—in the parlance of the field, the qubits need a long coherence time. If qubits don’t have long coherence times, they produce errors during calculations. The elaborate hardware shown helps cool Google’s quantum computer to 15 millikelvin—colder than outer space.

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