RQC Colloquium

22nd RQC Colloquium

  • 講演者

    Prof. Eric Lutz
    (University of Stuttgart)

  • 日程


  • 開催場所

    ハイブリッド(Zoom・和光地区 統合支援棟2階 大会議室)

  • 講演タイトル

    Converting quantum statistics into work

  • お問合せ


Heat engines convert thermal energy into mechanical work both in the classical and quantum regimes. However, quantum theory offers genuine non-classical forms of energy, different from heat, which so far have not been exploited in cyclic engines. I will present an experimental realization a quantum many-body engine fuelled by the energy difference between fermionic and bosonic ensembles of ultracold particles that follows from the Pauli exclusion principle. Employing a harmonically trapped superfluid gas of Li atoms close to a magnetic Feshbach resonance allows one of effectively change the quantum statistics from Bose–Einstein to Fermi–Dirac, by tuning the gas between a Bose–Einstein condensate of bosonic molecules and a unitary Fermi gas (and back) through a magnetic field. The quantum nature of such a Pauli engine is revealed by contrasting it with an engine in the classical thermal regime and with a purely interaction-driven device. These results establish quantum statistics as a useful thermodynamic resource for work production [1].

[1] Koch et al., A quantum engine in the BEC–BCS crossover, Nature 621, 723-727 (2023).

Flyer: 22nd RQC Colloquium Flyer

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