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SUMMARY:Thermodynamics in the presence of coherences and strong coupling c
 orrections - Janet Anders (University of Exeter)
DTSTART:20210506T130000Z
DTEND:20210506T140000Z
UID:TALK156919@talks.cam.ac.uk
CONTACT:Jan Behrends
DESCRIPTION:I will give an introductory talk on quantum thermodynamics [1]
  covering a selection of my group’s results in recent years.  \n\nWe wil
 l first ask what is "quantum" in quantum thermodynamics. To answer this qu
 estion we set up a quantum thermodynamic process that removes quantum info
 rmation in analogy to Landauer’s erasure of classical information. The t
 hermodynamic analysis of such a process uncovers that work can be extracte
 d from quantum coherences in addition to the work that can be extracted fr
 om classical non-equilibrium states [2].  \n\nIn the later part of the tal
 k\, I will report on a new thermodynamic uncertainty relation that limits 
 the accuracy of measuring the temperature and energy of a thermal quantum 
 system [3]. Corrections to the standard uncertainty relation arise here be
 cause\, unlike in standard thermodynamics\, a small system’s interaction
  with its environment is not negligible. The emerging relation unites ther
 modynamic and quantum uncertainties for the first time. \n\n[1] Quantum th
 ermodynamics\,  S. Vinjanampathy\, J. Anders\, Cont. Phys. 57\, 545 (2016)
 .\n\n[2] Coherence and measurement in quantum thermodynamics\, P. Kammerla
 nder\, J. Anders\, Sci. Rep. 6\, 22174 (2016). \n\n[3] Energy-temperature 
 uncertainty relation in quantum thermodynamics\, H. Miller\, J. Anders\, N
 at. Comm. 9\, 2203 (2018).\n\nMost recent: \n\n[4] Weak and ultrastrong co
 upling limits of the quantum mean force Gibbs state\, J. Cresser\, J. Ande
 rs\, arxiv 2104.12606 (2021).
LOCATION:Details of video conferencing will be distributed nearer the time
 .
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