Stochastic versus Periodic Quantum Collision Models

Article Quantum Science & Technology

Witnessing objectivity on a quantum computer

Diana A. Chisholm et al.

Summary: Quantum Darwinism proposes objectivity as consensus among independent observers. Quantum computers serve as platforms for experimental investigation of QD. Evaluation of current quantum devices in the field of QD is conducted through simulating a solvable stochastic collision model.

QUANTUM SCIENCE AND TECHNOLOGY (2022)

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Review Physics, Multidisciplinary

Quantum collision models: Open system dynamics from repeated interactions

Francesco Ciccarello et al.

Summary: This article presents an extensive introduction to quantum collision models (CMs), which are microscopic system-bath models used for investigating dynamics of open quantum systems. The article discusses the definition and general properties of CMs, their application in deriving master equations, their connection with quantum trajectories, and their use in non-equilibrium quantum thermodynamics, among other topics. The state of the art in each research area related to CMs is reviewed. The article also includes complementary appendices that review standard concepts and tools of open quantum systems, making the material accessible even to readers with a basic background in quantum mechanics.

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS (2022)

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Article Physics, Multidisciplinary

Stochastic Collisional Quantum Thermometry

Eoin O'Connor et al.

Summary: By introducing stochasticity in the waiting time distribution, such as the Weibull distribution, collisional quantum thermometry can significantly expand the parameter range. Optimal measurements can be performed locally without the need for genuine quantum correlations. This advantage holds true for both dephasing interactions and partial swap interactions.

ENTROPY (2021)

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Article Physics, Multidisciplinary

Stochastic collision model approach to transport phenomena in quantum networks

Dario A. Chisholm et al.

Summary: This paper introduces a new method that combines quantum microscopic description with classical stochastic description to study the interplay between environmental effects and quantum coherence in achieving maximal efficiency. The study found that the spatial and temporal heterogeneity of noise can affect transport efficiency, with preliminary validation in fully connected graphs and the FMO complex.

NEW JOURNAL OF PHYSICS (2021)

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Article Physics, Multidisciplinary

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

Steve Campbell et al.

Summary: Collision models are a remarkably flexible approach that can be used to understand non-Markovian dynamics and study the thermodynamics of quantum systems. Their simple structure gives them extremely broad applicability.

EPL (2021)

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Article Multidisciplinary Sciences