Journal
PHYSICAL REVIEW A
Volume 94, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.94.012107
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Funding
- KAKENHI Grant from Japan Society for the Promotion of Science [26287088]
- KAKENHI Grant [15H05855]
- MEXT of Japan
- ImPACT Program of Council for Science, Technology and Innovation (Cabinet Office, Government of Japan)
- MEXT scholarship
- Japan Society for the Promotion of Science through Program for Leading Graduate Schools (ALPS)
- Grants-in-Aid for Scientific Research [26287088, 15H05855, 16J03613] Funding Source: KAKEN
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We employ the quantum-jump-trajectory approach to construct a systematic framework to study the thermodynamics at the trajectory level in a nonequilibrium open quantum system under discrete feedback control. Within this framework, we derive quantum versions of the generalized Jarzynski equalities, which are demonstrated in an isolated pseudospin system and a coherently driven two-level open quantum system. Due to quantum coherence and measurement backaction, a fundamental distinction from the classical generalized Jarzynski equalities emerges in the quantum versions, which is characterized by a large negative information gain reflecting genuinely quantum rare events. A possible experimental scheme to test our findings in superconducting qubits is discussed.
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