Results 21 to 30 of about 4,550 (312)
Stability of Local Quantum Dissipative Systems [PDF]
Communications in Mathematical Physics, 2015 Open quantum systems weakly coupled to the environment are modeled by completely positive, trace preserving semigroups of linear maps. The generators of such evolutions are called Lindbladians. In the setting of quantum many-body systems on a lattice it is natural to consider Lindbladians that decompose into a sum of local interactions with decreasing ...
Cubitt, Toby S. +3 more
openaire +3 more sources
A simple tensor network algorithm for two-dimensional steady states
Nature Communications, 2017 Our understanding of open quantum many-body systems is limited because it is difficult to perform a theoretical treatment of both quantum and dissipative effects in large systems.
Augustine Kshetrimayum +2 more
doaj +1 more source
A random unitary circuit model for black hole evaporation
Journal of High Energy Physics, 2020 Inspired by the Hayden-Preskill protocol for black hole evaporation, we consider the dynamics of a quantum many-body qudit system coupled to an external environment, where the time evolution is driven by the continuous limit of certain 2-local random ...
Lorenzo Piroli +2 more
doaj +1 more source
Dissipative Quantum Feedback in Measurements Using a Parametrically Coupled Microcavity
PRX Quantum, 2022 Micro- and nanoscale optical or microwave cavities are used in a wide range of classical applications and quantum science experiments, ranging from precision measurements, laser technologies to quantum control of mechanical motion. The dissipative photon
Liu Qiu +5 more
doaj +1 more source
Metastable quantum entrainment
New Journal of Physics, 2021 Quantum van der Pol oscillators are driven-dissipative systems displaying quantum synchronization phenomena. When forced by a squeezed drive, the frequency adjusts to half of the forcing displaying multiple preferred phases.
Albert Cabot +2 more
doaj +1 more source
Dissipative quantum metrology in manybody systems of identical particles
New Journal of Physics, 2014 Estimation of physical parameters is essential in almost any part of science and technology. The enhancement of performance in this task (e.g. beating the standard classical shot-noise limit) using available physical resources is a major goal in ...
F Benatti, S Alipour, A T Rezakhani
doaj +1 more source
Quantum behavior of the Duffing oscillator at the dissipative phase transition
Nature Communications, 2023 The non-deterministic behavior of the Duffing oscillator is classically attributed to the coexistence of two steady states in a double-well potential. However, this interpretation fails in the quantum-mechanical perspective which predicts a single unique
Qi-Ming Chen +10 more
doaj +1 more source
Dissipative Floquet Dynamics: from Steady State to Measurement Induced Criticality in Trapped-ion Chains [PDF]
Quantum, 2022 Quantum systems evolving unitarily and subject to quantum measurements exhibit various types of non-equilibrium phase transitions, arising from the competition between unitary evolution and measurements.
Piotr Sierant +7 more
doaj +1 more source
Quantum thermometry with a dissipative quantum Rabi system
The European Physical Journal Plus, 2022 Dissipative quantum Rabi System, a finite-component system composed of a single two-level atom interacting with an optical cavity field mode, exhibits a quantum phase transition, which can be exploited to greatly enhance the estimation precision of unitary parameters (frequency and coupling strength). Here, using the quantum Langevin equation, standard
Dong Xie, Chunling Xu, An Min Wang
openaire +2 more sources
W★ Dynamics of Infinite Dissipative Quantum Systems [PDF]
Reports on Mathematical Physics, 2021 This article has been accepted for publication in 'Reports on Mathematical Physics'
openaire +3 more sources