Results 11 to 20 of about 1,751,283 (369)
Many-body open quantum systems
SciPost Physics Lecture NotesThese lecture notes discuss the recent theoretical advances in the understanding of open quantum many-body physics in platforms where both dissipative and coherent processes can be tuned and controlled to a high degree.
Rosario Fazio, Jonathan Keeling, Leonardo Mazza, Marco Schirò
doaj +4 more sources
Symmetry of Open Quantum Systems: Classification of Dissipative Quantum Chaos [PDF]
PRX Quantum, 2023 We develop a theory of symmetry in open quantum systems. Using the operator-state mapping, we characterize symmetry of Liouvillian superoperators for the open quantum dynamics by symmetry of operators in the double Hilbert space and apply the 38-fold ...
Kohei Kawabata +4 more
doaj +2 more sources
Adaptive variational simulation for open quantum systems [PDF]
Quantum, 2023 Emerging quantum hardware provides new possibilities for quantum simulation. While much of the research has focused on simulating closed quantum systems, the real-world quantum systems are mostly open.
Huo Chen +3 more
doaj +3 more sources
Digital Quantum Simulation of Open Quantum Systems Using Quantum Imaginary–Time Evolution [PDF]
PRX Quantum, 2022 Quantum simulation on emerging quantum hardware is a topic of intense interest. While many studies focus on computing ground-state properties or simulating unitary dynamics of closed systems, open quantum systems are an interesting target of study owing ...
Hirsh Kamakari +3 more
doaj +2 more sources
Quantum metrology with open dynamical systems
New Journal of Physics, 2013 This paper studies quantum limits to dynamical sensors in the presence of decoherence. A modified purification approach is used to obtain tighter quantum detection and estimation error bounds for optical phase sensing and optomechanical force sensing ...
Mankei Tsang
doaj +2 more sources
Krylov complexity in open quantum systems [PDF]
Physical Review Research, 2023 Krylov complexity is a measure of operator complexity that exhibits universal behavior and bounds a large class of other measures. In this paper, we generalize Krylov complexity from a closed system to an open system coupled to a Markovian bath, where ...
Chang Liu, Haifeng Tang, Hui Zhai
doaj +2 more sources
Multipartite quantum correlations in open quantum systems
New Journal of Physics, 2013 In this paper, we present a measure of quantum correlation for a multipartite system, defined as the sum of the correlations for all possible partitions.
ZhiHao Ma +2 more
doaj +4 more sources
Hypothesis Testing with Open Quantum Systems [PDF]
Physical Review Letters, 2015 Using a quantum circuit model we derive the maximal ability to distinguish which of several candidate Hamiltonians describe an open quantum system. This theory, in particular, provides the maximum information retrievable from continuous quantum measurement records, available when a quantum system is perturbatively coupled to a broadband quantized ...
Klaus Mølmer
openalex +6 more sources
Nonlinear dynamics of open quantum systems
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2018 The evolution of a composite closed system using the integral wave equation with the kernel in the form of path integral is considered. It is supposed that a quantum particle is a subsystem of this system.
Alexey Yu Samarin
doaj +3 more sources
Quantum Simulation of Open Quantum Systems Using a Unitary Decomposition of Operators [PDF]
Physical Review Letters, 2021 Electron transport in realistic physical and chemical systems often involves the nontrivial exchange of energy with a large environment, requiring the definition and treatment of open quantum systems.
Anthony W. Schlimgen +4 more
openalex +3 more sources