Quantum collision models: Open system dynamics from repeated interactions

Ciccarello, Francesco; Lorenzo, Salvatore; Giovannetti, Vittorio; Palma, G. Massimo

doi:10.1016/j.physrep.2022.01.001

Cited by 125 publications

(113 citation statements)

References 222 publications

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“…This physical understanding validates the name. The mathematical structure of repeated applications of the same CPTP map on a system makes the PReB process a class of collisional or repeated interaction models [10][11][12][13]15]. However, traditional collisional models typically consider repeated interactions with identically prepared single-site environments.…”

Section: Definition Of the Processmentioning

confidence: 99%

“…Furthermore, a large body of works regarding traditional collisional or repeated interaction models deals with obtaining a description in terms of Lindblad equations in the limit of small τ [10][11][12]. In order to derive the Lindblad equation, the system-bath coupling Hamiltonian is also scaled by τ −1/2 .…”

Section: Definition Of the Processmentioning

confidence: 99%

“…The mathematical structure of the PReB process puts it in the class of collisional or repeated interaction models [9][10][11]. These models have emerged as versatile tools for fundamental understanding of open quantum systems and quantum thermodynamics (see, for example, [12][13][14][15][16][17]).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Periodically refreshed quantum thermal machines

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Section: Definition Of the Processmentioning

confidence: 99%

Section: Definition Of the Processmentioning

confidence: 99%

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Periodically refreshed quantum thermal machines

Purkayastha,

Guarnieri,

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et al. 2022

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“…to Refs. [5][6][7] and the forthcoming comprehensive review [8] for more complete technical details.…”

mentioning

confidence: 99%

“…-Another area which has significantly benefited from both the simplicity and versatility of CMs is quantum thermodynamics. Consider the first law ∆E = ∆W + ∆Q (8) where ∆E is the total change in energy, ∆W is the work which is associated to changes in the total Hamiltonian and ∆Q accounts for the heat. For a single system weakly coupled to a thermal bath, these quantities can be readily determined solely based on the system degrees of freedom and a fully consistent thermodynamic framework can be established [4].…”

mentioning

confidence: 99%

Collision models in open system dynamics: A versatile tool for deeper insights?

Campbell

Vacchini

2021

EPL

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Understanding and simulating how a quantum system interacts and exchanges information or energy with its surroundings is a ubiquitous problem, one which must be carefully addressed in order to establish a coherent framework to describe the dynamics and thermodynamics of quantum systems. Significant effort has been invested in developing various methods for tackling this issue and in this Perspective paper we focus on one such technique, namely collision models, which have emerged as a remarkably flexible approach. We discuss their application to understanding non-Markovian dynamics and to studying the thermodynamics of quantum systems, two areas in which collision models have proven to be particularly insightful. Their simple structure endows them with extremely broad applicability which has spurred their recent experimental demonstrations. By focusing on these areas, our aim is to provide a succinct entry point to this remarkable framework.

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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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Quantum collision models: Open system dynamics from repeated interactions

Cited by 125 publications

References 222 publications

Periodically refreshed quantum thermal machines

Periodically refreshed quantum thermal machines

Collision models in open system dynamics: A versatile tool for deeper insights?

Improving Entanglement Generation Using the Coherence of a Nonthermal Reservoir

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