Repeated Interactions and Quantum Stochastic Thermodynamics at Strong Coupling

Strasberg, Philipp

doi:10.1103/physrevlett.123.180604

Cited by 70 publications

(96 citation statements)

References 87 publications

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“…V B) and show that they naturally imply corresponding thermodynamic definitions at the trajectory level, which coincide with the definitions of Ref. [15][16][17] apart from one minor exception (Sec. V C).…”

Section: Thermodynamic Equivalence With the Operational Frameworksupporting

confidence: 54%

“…By overcoming all these assumptions, we do not only justify the framework of Refs. [15][16][17], but we provide a general and promising tool to study the emergence of thermodynamic quantities at the trajectory level, also for classical systems and even beyond the present considerations.…”

Section: Introductionmentioning

confidence: 92%

“…By using only arguments from nonequilibrium statistical mechanics of isolated systems, we provide a solid and independent justification for the definitions of Refs. [15][16][17]. To the best of the authors' knowledge, this distinguishes the operational approach from other proposals in quantum stochastic thermodynamics.…”

Section: Introductionmentioning

confidence: 94%

“…Consequently, also Refs. [15][16][17] ignored the preparation costs of the ancillas. In our context, it suffices to point out that, at least in principle, it is possible that the preparation has zero thermodynamic cost.…”

Section: A Agreementsmentioning

confidence: 99%

“…A detailed calculation how to combine the two frameworks can be found in the Supplement of Ref. [17] and therefore we here only present its essential elements.…”

Section: B Thermodynamics At the Unmeasured Levelmentioning

confidence: 99%

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Thermodynamics of Quantum Causal Models: An Inclusive, Hamiltonian Approach

Strasberg

2020

Quantum

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Operational quantum stochastic thermodynamics is a recently proposed theory to study the thermodynamics of open systems based on the rigorous notion of a quantum stochastic process or quantum causal model. In there, a stochastic trajectory is defined solely in terms of experimentally accessible measurement results, which serve as the basis to define the corresponding thermodynamic quantities. In contrast to this observer-dependent point of view, a 'black box', which evolves unitarily and can simulate any quantum causal model, is constructed here. The quantum thermodynamics of this big isolated system can then be studied using widely accepted arguments from statistical mechanics. It is shown that the resulting definitions of internal energy, heat, work, and entropy have a natural extension to the trajectory level. The canonical choice of them coincides with the proclaimed definitions of operational quantum stochastic thermodynamics, thereby providing strong support in favour of that novel framework. However, a few remaining ambiguities in the definition of stochastic work and heat are also discovered and in light of these findings some other proposals are reconsidered. Finally, it is demonstrated that the first and second law hold for an even wider range of scenarios than previously thought, covering arbitrary quantum causal models based solely on a single assumption about the initial system-bath state.

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Section: Thermodynamic Equivalence With the Operational Frameworksupporting

confidence: 54%

Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 94%

Section: A Agreementsmentioning

confidence: 99%

“…A detailed calculation how to combine the two frameworks can be found in the Supplement of Ref. [17] and therefore we here only present its essential elements.…”

Section: B Thermodynamics At the Unmeasured Levelmentioning

confidence: 99%

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Thermodynamics of Quantum Causal Models: An Inclusive, Hamiltonian Approach

Strasberg

2020

Quantum

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Improving Entanglement Generation Using the Coherence of a Nonthermal Reservoir

Man

Xia

2023

Adv Quantum Tech

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The effect of environmental coherence on bipartite and tripartite quantum entanglements using quantum collision models is studied. In the collision model, an open quantum system of two qubits indirectly interacts with the reservoir via auxiliary qubits. The reservoir is modeled as a collection of initially uncorrelated qubits prepared in an identically nonthermal state. It is shown that the coherence of the nonthermal reservoir contributes to the generation and protection of entanglement. It is found that adding coherence to the initial state of the reservoir qubit can significantly enhance the steady-state entanglement of the system, and the presence of coherence in the reservoir allows steady-state entanglement to be obtained in a higher temperature region.

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