Results 21 to 30 of about 1,675 (175)
Non-Markovian dynamics under time-translation symmetry
Physical Review Research, 2022 A dynamical symmetry is employed to determine the structure of the quantum non-Markovian time-local master equation. Such a structure is composed from two components: scalar kinetic coefficients and the standard quantum Markovian operator form.
Roie Dann, Nina Megier, Ronnie Kosloff
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Solvable class of non-Markovian quantum multipartite dynamics [PDF]
Physical Review A, 2021 We study a class of multipartite open quantum dynamics for systems of arbitrary number of qubits. The non-Markovian quantum master equation can involve arbitrary single or multipartite and time-dependent dissipative coupling mechanisms, expressed in terms of strings of Pauli operators.
Adrián A. Budini, Juan P. Garrahan
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Coherencia y entrelazamiento en dinámica no Markoviana de qubits [PDF]
Universitas Scientiarum, 2013 We provide a thorough analysis of the entanglement dynamics of an interacting two-qubit systemin the non-Markovian regime. In such a regime, the time scale on which the reservoir degrees offreedom evolve is either of the same order of magnitude or less ...
Cristian Edwin Susa Quintero +1 more
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Quantum discord and non-Markovianity of quantum dynamics [PDF]
Physical Review A, 2012 The problem of recognizing (non-)Markovianity of a quantum dynamics is revisited through analyzing quantum correlations. We argue that instantaneously-vanishing quantum discord provides a necessary and sufficient condition for Markovianity of a quantum map. This is used to introduce a measure of non-Markovianity.
Alipour, S., Mani, A., Rezakhani, A. T.
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Fitting quantum noise models to tomography data [PDF]
Quantum, 2023 The presence of noise is currently one of the main obstacles to achieving large-scale quantum computation. Strategies to characterise and understand noise processes in quantum hardware are a critical part of mitigating it, especially as the overhead of ...
Emilio Onorati +2 more
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Irreversibility mitigation in unital non-Markovian quantum evolutions
Physical Review Research, 2020 The relation between thermodynamic entropy production and non-Markovian evolutions is a matter of current research. Here, we study the behavior of the stochastic entropy production in open quantum systems undergoing unital non-Markovian dynamics.
Stefano Gherardini +2 more
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A measure of non-Markovianity for unital quantum dynamical maps [PDF]
Quantum Information Processing, 2015 One of the most important topics in the study of the dynamics of open quantum system is information exchange between system and environment. Based on the features of a back-flow information from an environment to a system, an approach is provided to detect non-Markovianity for unital dynamical maps.
Soroush Haseli +2 more
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Dephasing Dynamics in a Non-Equilibrium Fluctuating Environment
Entropy, 2023 We performed a theoretical study of the dephasing dynamics of a quantum two-state system under the influences of a non-equilibrium fluctuating environment. The effect of the environmental non-equilibrium fluctuations on the quantum system is described by
Xiangjia Meng +5 more
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General Non-Markovian Dynamics of Open Quantum Systems [PDF]
Physical Review Letters, 2012 We present a general theory of non-Markovian dynamics for open quantum systems. We explore the non-Markovian dynamics by connecting the exact master equations with the non-equilibirum Green functions. Environmental back-actions are fully taken into account.
Zhang, Wei-Min +4 more
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Equivalence between non-Markovian dynamics and correlation backflows
New Journal of Physics, 2020 The information encoded into an open quantum system that evolves under a Markovian dynamics is always monotonically non-increasing. Nonetheless, for a given quantifier of the information contained in the system, it is in general not clear if for all non ...
Dario De Santis, Markus Johansson
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