Results 31 to 40 of about 58,975 (287)
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
Quantum Lyapunov exponent in dissipative systems
Physical Review E, 2023 The out-of-time order correlator (OTOC) has been widely studied in closed quantum systems. However, there are very few studies for open systems and they are mainly focused on isolating the effects of scrambling from those of decoherence. Adopting a different point of view, we study the interplay between these two processes. This proves crucial in order
Pablo D. Bergamasco +2 more
openaire +4 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
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
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
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
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
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
Emerging unitary evolutions in dissipatively coupled systems [PDF]
, 2019 Having a broad range of methods available for implementing unitary operations is crucial for quantum information tasks. We study a dissipative process commonly used to describe dissipatively coupled systems and show that the process can lead to pure ...
Arenz, C., Metelmann, A.
core +2 more sources