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UID:6ab7a9aa7b511
DTSTART:20240703T130000Z
SEQUENCE:0
TRANSP:OPAQUE
DTEND:20240703T140000Z
LOCATION:Seminar Room
SUMMARY:ICFO | SOURAV BHATTACHARJEE
CLASS:PUBLIC
DESCRIPTION:Heat engines convert thermal energy into mechanical work both i
 n the classical and quantum regimes1. However\, quantum theory offers genu
 ine non-classical forms of energy\, different from heat\, which so far hav
 e not been exploited in cyclic engines. Here we experimentally realize a q
 uantum many-body engine fuelled by the energy difference between fermionic
  and bosonic ensembles of ultracold particles that follows from the Pauli 
 exclusion principle2. We employ a harmonically trapped superfluid gas of&n
 bsp\;6Li atoms close to a magnetic Feshbach resonance3&nbsp\;that allows u
 s to effectively change the quantum statistics from Bose&ndash\;Einstein t
 o Fermi&ndash\;Dirac\, by tuning the gas between a Bose&ndash\;Einstein co
 ndensate of bosonic molecules and a unitary Fermi gas (and back) through a
  magnetic field4\,5\,6\,7\,8\,9\,10. The quantum nature of such a Pauli en
 gine is revealed by contrasting it with an engine in the classical thermal
  regime and with a purely interaction-driven device. We obtain a work outp
 ut of several 106&nbsp\;vibrational quanta per cycle with an efficiency of
  up to 25%. Our findings establish quantum statistics as a useful thermody
 namic resource for work production.
DTSTAMP:20260926T111658Z
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