Results 11 to 20 of about 134,952 (255)
Quantum Zeno Effect in Open Quantum Systems [PDF]
Annales Henri Poincaré, 2021 AbstractWe prove the quantum Zeno effect in open quantum systems whose evolution, governed by quantum dynamical semigroups, is repeatedly and frequently interrupted by the action of a quantum operation. For the case of a quantum dynamical semigroup with a bounded generator, our analysis leads to a refinement of existing results and extends them to a ...
Becker, Simon +2 more
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Complexity for an open quantum system [PDF]
Physical Review D, 2022 ندرس التعقيد لنظام كمومي مفتوح. نظامنا عبارة عن مذبذب توافقي مقترن بمجال رقمي أحادي البعد عديم الكتلة، والذي يعمل كحمام. على وجه التحديد، نأخذ في الاعتبار مصفوفة الكثافة المنخفضة من خلال تتبع درجات حرية الحمام لكل من المذبذبات العادية والمقلوبة وحساب تعقيد التنقية والتعقيد باستخدام تخطيط حالة المشغل.
Arpan Bhattacharyya +3 more
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International Journal of Modern Physics E, 1994 The damping of the harmonic oscillator is studied in the framework of the Lindblad theory for open quantum systems. A generalization of the fundamental constraints on quantum mechanical diffusion coefficients which appear in the master equation for the damped quantum oscillator is presented; the Schrödinger, Heisenberg and Weyl-Wigner-Moyal ...
Isar, A. +4 more
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Open fermionic quantum systems [PDF]
Physical Review B, 1993 A method to treat a quantum system in interaction with a fermionic reservoir is presented. Its most important feature is that the dynamics of the exchange of particles between the system and the reservoir is explicitly included via an effective interaction term in the Hamiltonian. This feature gives rise to fluctuations in the total number of particles
Artacho, E., Falicov, L.M.
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Current in Open Quantum Systems [PDF]
Physical Review Letters, 2004 We show that a dissipative current component is present in the dynamics generated by a Liouville-master equation, in addition to the usual component associated with Hamiltonian evolution. The dissipative component originates from coarse graining in time, implicit in a master equation, and needs to be included to preserve current continuity.
Gebauer, Ralph, Car, Roberto
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Mathematics, 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
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Localization in Open Quantum Systems [PDF]
Physical Review Letters, 2017 In an isolated single-particle quantum system a spatial disorder can induce Anderson localization. Being a result of interference, this phenomenon is expected to be fragile in the face of dissipation. Here we show that dissipation can drive a disordered system into a steady state with tunable localization properties.
Yusipov, I. I. +3 more
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From Open Quantum Systems to Open Quantum Maps [PDF]
Communications in Mathematical Physics, 2011 For a class of quantized open chaotic systems satisfying a natural dynamical assumption, we show that the study of the resolvent, and hence of scattering and resonances, can be reduced to the study of a family of open quantum maps, that is of finite dimensional operators obtained by quantizing the Poincaré map associated with the flow near the set of ...
Nonnenmacher, Stéphane +2 more
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Open quantum systems for quarkonia [PDF]
International Journal of Modern Physics A, 2021 I review recent applications of the open quantum system framework in the understanding of quarkonium suppression in heavy-ion collisions, which has been used as a probe of the quark–gluon plasma for decades. The derivation of the Lindblad equations for quarkonium in both the quantum Brownian motion and the quantum optical limits and their ...
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Demonstration of dynamical control of three-level open systems with a superconducting qutrit
New 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
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