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Quantum Information Scrambling in Non-Markovian Open Quantum System [PDF]

open access: yesEntropy, 2022
In this paper, we investigate the dynamics of a spin chain whose two end spins interact with two independent non-Markovian baths by using the non-Markovian quantum state diffusion (QSD) equation approach.
Li-Ping Han, Jian Zou, Hai Li, Bin Shao
doaj   +2 more sources

Work Measurement in OPEN Quantum System [PDF]

open access: yesEntropy, 2022
Work is an important quantity in thermodynamics. In a closed quanutm system, the two-point energy measurements can be applied to measure the work but cannot be utilized in an open quantum system.
Youyang Xu
doaj   +2 more sources

Singly-excited resonant open quantum system Tavis-Cummings model with quantum circuit mapping [PDF]

open access: yesScientific Reports, 2023
Tavis-Cummings (TC) cavity quantum electrodynamical effects, describing the interaction of N atoms with an optical resonator, are at the core of atomic, optical and solid state physics.
Marina Krstic Marinkovic   +1 more
doaj   +2 more sources

Accessible coherence in open quantum system dynamics [PDF]

open access: goldQuantum, 2020
Quantum coherence generated in a physical process can only be cast as a potentially useful resource if its effects can be detected at a later time. Recently, the notion of non-coherence-generating-and-detecting (NCGD) dynamics has been introduced and ...
María García Díaz   +7 more
doaj   +2 more sources

Large-scale stochastic simulation of open quantum systems [PDF]

open access: yesNature Communications
Understanding interactions between quantum systems and their environments is crucial for developing stable quantum technologies and accurate physical models. Yet, simulating open quantum systems with non-unitary dynamics remains computationally demanding.
Aaron Sander   +8 more
doaj   +2 more sources

Hamiltonian open quantum system toolkit

open access: yesCommunications Physics, 2022
In quantum computing, simulating continuously evolving open quantum systems is key to describe dynamical processes on noisy quantum devices. Here, the authors present an open-source software package “Hamiltonian Open Quantum System Toolkit” (HOQST) for ...
Huo Chen, Daniel A. Lidar
doaj   +1 more source

Experimental Optical Simulator of Reconfigurable and Complex Quantum Environment

open access: yesPRX Quantum, 2023
No quantum system can be considered totally isolated from its environment. In most cases the interaction between the system of interest and the external degrees of freedom deeply changes its dynamics, as described by open quantum system theory ...
P. Renault   +8 more
doaj   +1 more source

Long-Term Behaviour in an Exactly Solvable Model of Pure Decoherence and the Problem of Markovian Embedding

open access: yesMathematics, 2023
We consider a well-known, exactly solvable model of an open quantum system with pure decoherence. The aim of this paper is twofold. Firstly, decoherence is a property of open quantum systems important for both quantum technologies and the fundamental ...
Anton Trushechkin
doaj   +1 more source

Demonstration of dynamical control of three-level open systems with a superconducting qutrit

open access: yesNew Journal of Physics, 2022
We propose a method for the dynamical control in three-level open systems and realize it in the experiment with a superconducting qutrit. Our work demonstrates that in the Markovian environment for a relatively long time (3 μ s), the systemic populations
Ri-Hua Zheng   +4 more
doaj   +1 more source

Open quantum system violates generalized Pauli constraints on quantum device

open access: yesCommunications Physics, 2023
The Pauli exclusion principle governs the fundamental structure and function of fermionic systems from molecules to materials. Nonetheless, when such a fermionic system is in a pure state, it is subject to additional restrictions known as the generalized
Irma Avdic   +2 more
doaj   +1 more source

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