Results 91 to 100 of about 746,824 (179)
Vanishing quantum discord is necessary and sufficient for completely positive maps
, 2009 Two long standing open problems in quantum theory are to characterize the class of initial system-bath states for which quantum dynamics is equivalent to (1) a map between the initial and final system states, and (2) a completely positive (CP) map.
Alireza Shabani +3 more
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From stochastic Hamiltonian to quantum simulation: exploring memory effects in exciton dynamics
New Journal of PhysicsThe unraveling of open quantum system dynamics in terms of stochastic quantum trajectories offers a picture of open system dynamics that consistently considers memory effects stemming from the finite correlation time of environment fluctuations.
Federico Gallina +2 more
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Open-System Quantum Annealing in Mean-Field Models with Exponential Degeneracy*
Physical Review X, 2016 Real-life quantum computers are inevitably affected by intrinsic noise resulting in dissipative nonunitary dynamics realized by these devices. We consider an open-system quantum annealing algorithm optimized for such a realistic analog quantum device ...
Kostyantyn Kechedzhi +1 more
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Digital quantum simulation framework for energy transport in an open quantum system
New Journal of Physics, 2020 Quantum effects such as the environment assisted quantum transport (ENAQT) displayed in photosynthetic Fenna–Mathews–Olson (FMO) complex has been simulated on analog quantum simulators.
Pragati Gupta, C M Chandrashekar
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Quantifying entanglement in multipartite conditional states of open quantum systems by measurements of their photonic environment [PDF]
, 2012 A key lesson of the decoherence program is that information flowing out from an open system is stored in the quantum state of the surroundings. Simultaneously, quantum measurement theory shows that the evolution of any open system when its environment is
Strunz, Walter T. +2 more
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NONEQUILIBRIUM QUANTUM EVOLUTION OF OPEN SYSTEMS [PDF]
Condensed Matter Physics, 2000 RevTex 13 pages, Contributed to the journal "Condensed Matter Physics"
openaire +3 more sources
Exceptional points for parameter estimation in open quantum systems: analysis of the Bloch equations
New Journal of Physics, 2015 We suggest to employ the dissipative nature of open quantum systems for the purpose of parameter estimation: the dynamics of open quantum systems is typically described by a quantum dynamical semigroup generator ${\mathcal{L}}.$ The eigenvalues of ...
Morag Am-Shallem +2 more
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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. We start by reviewing the theoretical frameworks and methods used to describe and tackle open quantum many-body systems.
Rosario Fazio +3 more
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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 ...
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Open system dynamics in interacting quantum field theories
Physical Review ResearchA quantum system that interacts with an environment generally undergoes nonunitary evolution described by a non-Markovian or Markovian master equation. In this paper, we construct the non-Markovian Redfield master equation for a quantum scalar field that
Brenden Bowen +2 more
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