4.4 Article

Quantum heat engines: A thermodynamic analysis of power and efficiency

Journal

EPL
Volume 99, Issue 5, Pages -

Publisher

IOP PUBLISHING LTD
DOI: 10.1209/0295-5075/99/50005

Keywords

-

Funding

  1. Indian Institute of Science, Bangalore, India [11-0201-0591-01-412/415/433]
  2. Israel Science Foundation [924/11]
  3. US-Israel Binational Science Foundation [2010363]
  4. National Science Foundation (NSF) [CHE-1058791]
  5. Chemical Sciences, Geosciences, and Biosciences Division, Office of Basic Energy Sciences, Office of Science, (U.S.) Department of Energy (DOE)
  6. Direct For Mathematical & Physical Scien
  7. Division Of Chemistry [1058791] Funding Source: National Science Foundation

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We show that the operation and the output power of a quantum heat engine that converts incoherent thermal energy into coherent cavity photons can be optimized by manipulating quantum coherences. The gain or loss in the efficiency at maximum power depends on the details of the output power optimization. Quantum effects tend to enhance the output power and the efficiency as the photon occupation in the cavity is decreased.

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