The smallest refrigerators can reach maximal efficiency
classification
🪐 quant-ph
keywords
efficiencyreachsizesmallanalyseanalyticallycarnotcomplementarity
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We investigate whether size imposes a fundamental constraint on the efficiency of small thermal machines. We analyse in detail a model of a small self-contained refrigerator consisting of three qubits. We show analytically that this system can reach the Carnot efficiency, thus demonstrating that there exists no complementarity between size and efficiency.
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