期刊
PHYSICAL REVIEW LETTERS
卷 114, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.114.060602
关键词
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资金
- Alexander von Humboldt Foundation
- UK EPSRC [EP/G004579/1]
- John Templeton Foundation [ID 21806, ID 43467]
- EU Collaborative Project TherMiQ [618074]
- COST Action [MP1209]
- Engineering and Physical Sciences Research Council [EP/G004579/1] Funding Source: researchfish
- EPSRC [EP/G004579/1] Funding Source: UKRI
Using the operational framework of completely positive, trace preserving operations and thermodynamic fluctuation relations, we derive a lower bound for the heat exchange in a Landauer erasure process on a quantum system. Our bound comes from a nonphenomenological derivation of the Landauer principle which holds for generic nonequilibrium dynamics. Furthermore, the bound depends on the nonunitality of dynamics, giving it a physical significance that differs from other derivations. We apply our framework to the model of a spin-1/2 system coupled to an interacting spin chain at finite temperature.
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