Results 41 to 50 of about 1,699,778 (381)

Stochastic Representation of Non-Markovian Fermionic Quantum Dissipation. [PDF]

open access: yesPhysical Review Letters, 2018
Quantum Brownian motion plays a fundamental role in many areas of modern physics. In the path-integral formulation, environmental fluctuations can be characterized by auxiliary stochastic fields.
L. Han   +4 more
semanticscholar   +1 more source

Quantum dissipative adaptation [PDF]

open access: yesCommunications Physics, 2021
AbstractDissipative adaptation is a general thermodynamic mechanism that explains self-organization in a broad class of driven classical many-body systems. It establishes how the most likely (adapted) states of a system subjected to a given drive tend to be those following trajectories of highest work absorption, followed by dissipated heat to the ...
Daniel Valente   +2 more
openaire   +3 more sources

Dissipation without resistance: Imaging impurities at quantum Hall edges

open access: yesPhysical Review Research, 2020
Motivated by a recent experiment [A. Marguerite et al., Nature (London) 575, 628 (2019)NATUAS0028-083610.1038/s41586-019-1704-3] on imaging in graphene samples, we investigate theoretically the dissipation induced by resonant impurities in the quantum ...
Gu Zhang   +2 more
doaj   +1 more source

Dissipation-Based Quantum Sensing of Magnons with a Superconducting Qubit. [PDF]

open access: yesPhysical Review Letters, 2020
Hybrid quantum devices expand the tools and techniques available for quantum sensing in various fields. Here, we experimentally demonstrate quantum sensing of a steady-state magnon population in a magnetostatic mode of a ferrimagnetic crystal ...
S. Wolski   +6 more
semanticscholar   +1 more source

Velocity-dependent quantum phase slips in 1D atomic superfluids [PDF]

open access: yes, 2016
Quantum phase slips are the primary excitations in one-dimensional superfluids and superconductors at low temperatures but their existence in ultracold quantum gases has not been demonstrated yet.
Abbate, Simona Scaffidi   +7 more
core   +2 more sources

Superconducting-like Heat Current: Effective Cancellation of Current-Dissipation Trade-Off by Quantum Coherence. [PDF]

open access: yesPhysical Review Letters, 2020
Quantum coherence is a useful resource for increasing the speed and decreasing the irreversibility of quantum dynamics. Because of this feature, coherence is used to enhance the performance of various quantum information processing devices beyond the ...
H. Tajima, K. Funo
semanticscholar   +1 more source

Completely Positive Quantum Dissipation [PDF]

open access: yesPhysical Review Letters, 2000
A completely positive master equation describing quantum dissipation for a Brownian particle is derived starting from microphysical collisions, exploiting a recently introduced approach to subdynamics of a macrosystem. The obtained equation can be cast into Lindblad form with a single generator for each Cartesian direction.
openaire   +5 more sources

Quantum work statistics close to equilibrium

open access: yesPhysical Review Research, 2020
We study the statistics of work, dissipation, and entropy production of a quantum quasi-isothermal process, where the system remains close to thermal equilibrium along the transformation.
Matteo Scandi   +3 more
doaj   +1 more source

PT-symmetric non-Hermitian quantum many-body system using ultracold atoms in an optical lattice with controlled dissipation [PDF]

open access: yesProgress of Theoretical and Experimental Physics, 2020
We report our realization of a parity–time (PT)-symmetric non-Hermitian many-body system using cold atoms with dissipation. After developing a theoretical framework on PT-symmetric many-body systems using ultracold atoms in an optical lattice with ...
Y. Takasu   +5 more
semanticscholar   +1 more source

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