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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Thermodynamics of weakly measured quantum systems
AU - Alonso, Jose Joaquin
AU - Lutz, Eric
AU - Romito, Alessandro
PY - 2016/2/26
Y1 - 2016/2/26
N2 - We consider continuously monitored quantum systems and introduce definitions of work and heat along individual quantum trajectories that are valid for coherent superpositions of energy eigenstates. We use these quantities to extend the first and second laws of stochastic thermodynamics to the quantum domain. We illustrate our results with the case of a weakly measured driven two-level system and show how to distinguish between quantum work and heat contributions. We finally employ quantum feedback control to suppress detector backaction and determine the work statistics.
AB - We consider continuously monitored quantum systems and introduce definitions of work and heat along individual quantum trajectories that are valid for coherent superpositions of energy eigenstates. We use these quantities to extend the first and second laws of stochastic thermodynamics to the quantum domain. We illustrate our results with the case of a weakly measured driven two-level system and show how to distinguish between quantum work and heat contributions. We finally employ quantum feedback control to suppress detector backaction and determine the work statistics.
KW - quant-ph
U2 - 10.1103/PhysRevLett.116.080403
DO - 10.1103/PhysRevLett.116.080403
M3 - Journal article
VL - 116
JO - Physical review letters
JF - Physical review letters
SN - 1079-7114
IS - 8
M1 - 080403
ER -