Articles with "quantum master" as a keyword



Dissipaton dynamics theory versus quantum master equations

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Published in 2018 at "Chemical Physics"

DOI: 10.1016/j.chemphys.2018.08.046

Abstract: Abstract In this review article we present first a comprehensive account on the recently developed the dissipaton-equation-of-motion (DEOM) theory. This is a statistical quasi-particle theory for open quantum systems. It treats not only the quantum… read more here.

Keywords: master equations; quantum master; dissipaton dynamics; dynamics theory ... See more keywords

Tensor-Train Thermo-Field Memory Kernels for Generalized Quantum Master Equations.

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Published in 2022 at "Journal of chemical theory and computation"

DOI: 10.1021/acs.jctc.2c00892

Abstract: The generalized quantum master equation (GQME) approach provides a rigorous framework for deriving the exact equation of motion for any subset of electronic reduced density matrix elements (e.g., the diagonal elements). In the context of… read more here.

Keywords: tensor train; train thermo; memory; memory kernels ... See more keywords

Simulating Open Quantum System Dynamics on NISQ Computers with Generalized Quantum Master Equations.

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Published in 2023 at "Journal of chemical theory and computation"

DOI: 10.1021/acs.jctc.3c00316

Abstract: We present a quantum algorithm based on the generalized quantum master equation (GQME) approach to simulate open quantum system dynamics on noisy intermediate-scale quantum (NISQ) computers. This approach overcomes the limitations of the Lindblad equation,… read more here.

Keywords: system; open quantum; quantum; nisq computers ... See more keywords

Discrete Generalized Quantum Master Equations.

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Published in 2025 at "Journal of chemical theory and computation"

DOI: 10.1021/acs.jctc.5c00396

Abstract: Several derivative and integral approximations are explored for discretizing the Nakajima-Zwanzig generalized quantum master equation (NZ-QME or GQME) to obtain discrete quantum master equation (DQME) hierarchies and relations between discrete memory kernel and reduced density… read more here.

Keywords: equation; quantum master; generalized quantum; discrete generalized ... See more keywords

Linear response theory for open systems: Quantum master equation approach

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Published in 2017 at "Physical Review A"

DOI: 10.1103/physreva.95.022126

Abstract: A linear response theory for open quantum systems is formulated by means of the time-local and time-nonlocal quantum master equations, where a relevant quantum system interacts with a thermal reservoir as well as with an… read more here.

Keywords: linear response; response theory; quantum master; response ... See more keywords

Quantum master equations for entangled qubit environments

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Published in 2018 at "Physical Review A"

DOI: 10.1103/physreva.98.062104

Abstract: We study the Markovian dynamics of a collection of n quantum systems coupled to an irreversible environmental channel consisting of a stream of n entangled qubits. Within the framework of repeated quantum interactions, we derive… read more here.

Keywords: qubit environments; equations entangled; master equations; quantum master ... See more keywords
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From nonequilibrium Green's functions to quantum master equations for the density matrix and out-of-time-order correlators: Steady-state and adiabatic dynamics

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Published in 2021 at "Physical Review B"

DOI: 10.1103/physrevb.104.035425

Abstract: Bibek Bhandari, 2 Rosario Fazio, 4 Fabio Taddei, and Liliana Arrachea NEST, Scuola Normale Superiore and Istituto Nanoscienze-CNR, I-56126 Pisa, Italy Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627, USA ICTP, Strada… read more here.

Keywords: nonequilibrium green; quantum master; master equations; equations density ... See more keywords

Perturbative steady states of completely positive quantum master equations.

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Published in 2022 at "Physical review. E"

DOI: 10.1103/physreve.106.054145

Abstract: The Lindblad form guarantees complete positivity of a Markovian quantum master equation (QME). However, its microscopic derivation for a quantum system weakly interacting with a thermal bath requires several approximations, which may result in inaccuracies in… read more here.

Keywords: state; lindbladian qmes; steady states; mfg state ... See more keywords

Memory-effect-preserving quantum master equation approach to noise spectrum of transport current.

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Published in 2022 at "Physical review. E"

DOI: 10.1103/physreve.106.064130

Abstract: Within the time-nonlocal quantum master equation description, we develop an efficient method for calculating the noise spectrum of transport current through interacting mesoscopic systems. By introducing proper current-related density operators, we propose a practical and very… read more here.

Keywords: noise spectrum; transport; quantum master; equation ... See more keywords

Complete positivity and thermal relaxation in quadratic quantum master equations.

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Published in 2024 at "Physical review. E"

DOI: 10.1103/physreve.110.054116

Abstract: The ultimate goal of this paper is to develop a systematic method for deriving quantum master equations that satisfy the requirements of a completely positive and trace-preserving (CPTP) map, further describing thermal relaxation processes. In this… read more here.

Keywords: thermal relaxation; quantum master; master equation; master ... See more keywords

Canonically Consistent Quantum Master Equation.

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Published in 2022 at "Physical review letters"

DOI: 10.1103/physrevlett.129.200403

Abstract: We put forth a new class of quantum master equations that correctly reproduce the asymptotic state of an open quantum system beyond the infinitesimally weak system-bath coupling limit. Our method is based on incorporating the… read more here.

Keywords: quantum; master equation; master; canonically consistent ... See more keywords