quantum refrigerator (IMAGE)
Caption
The new quantum refrigerator, seen here in an artist's conception, is based on superconducting circuits. The device, which cools qubits to record low temperatures, is composed of two qubits---one hot (top right) and one cold (bottom right)—which cool a third, target qubit (bottom left). Powered by heat from a nearby hot environment, the quantum refrigerator extracts thermal energy from the target qubit autonomously and dumps it to a cold environment. As a result, the target qubit reaches a high-quality ground state with minimal error, primed for efficient quantum computation. The device was created in the nanofabrication lab Myfab at Chalmers University of Technology, Sweden.
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Chalmers University of Technology/Boid AB/NIST
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