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The smallest refrigerators can reach maximal efficiency

Research output: Contribution to journalArticle

Original languageEnglish
Article number492002
Pages (from-to)-
Number of pages7
JournalJournal of Physics A: Mathematical and Theoretical
Issue number49
DatePublished - 9 Dec 2011


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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