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First superconducting quantum heat engine converts heat near absolute zero into useful work
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Aalto University researchers have demonstrated the first cyclic superconducting quantum heat engine, converting heat near absolute zero into measurable work using a transmon qubit and a quantum refrigerator.
Future autonomous versions of this engine could read out qubits directly at millikelvin temperatures, eliminating the need to route microwave pulses to room temperature. This could significantly reduce the cost and complexity of large-scale quantum computers by removing huge numbers of noise-producing microwave cables.
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Researchers built the first cyclic quantum heat engine inside a superconducting circuit, operating it near absolute zero.
The engine uses a single quantum refrigerator to provide both heating and cooling to a transmon qubit, driving an Otto cycle.
Future autonomous versions could read out qubits locally, reducing the need for costly microwave cables in massive quantum computers.
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