Electronic refrigeration at the quantum limit

Research output: Contribution to journalArticleScientificpeer-review


Research units

  • University of New South Wales
  • RAS - Institute of Solid State Physics


We demonstrate quantum-limited electronic refrigeration of a metallic island in a low-temperature microcircuit. We show that matching the impedance of the circuit enables refrigeration at a distance, of about 50  μm in our case, through superconducting leads with a cooling power determined by the quantum of thermal conductance. In a reference sample with a mismatched circuit this effect is absent. Our results are consistent with the concept of electromagnetic heat transport. We observe and analyze the crossover between electromagnetic and quasiparticle heat flux in a superconductor.


Original languageEnglish
Article number200801
Pages (from-to)1-4
Number of pages4
JournalPhysical Review Letters
Issue number20
Publication statusPublished - 18 May 2009
MoE publication typeA1 Journal article-refereed

    Research areas

  • electronic refrigeration, heat transport, quantum limit

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