Quantum measurement and decoherence [PDF]
, 2001 Distribution functions defined in accord with the quantum theory of measurement are combined with results obtained from the quantum Langevin equation to discuss decoherence in quantum Brownian motion. Closed form expressions for wave packet spreading and
A. O. Caldeira +17 more
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Dissipation without resistance: Imaging impurities at quantum Hall edges
Physical 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]
Physical 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
Quantum work statistics close to equilibrium
Physical 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
Superconducting-like Heat Current: Effective Cancellation of Current-Dissipation Trade-Off by Quantum Coherence. [PDF]
Physical 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
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Velocity-dependent quantum phase slips in 1D atomic superfluids [PDF]
, 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
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PT-symmetric non-Hermitian quantum many-body system using ultracold atoms in an optical lattice with controlled dissipation [PDF]
Progress 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
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Fractional Quantum Zeno Effect Emerging from Non-Hermitian Physics
Physical Review X, 2023 Exploring non-Hermitian phenomenology is an exciting frontier of modern physics. However, the demonstration of a non-Hermitian phenomenon that is quantum in nature has remained elusive.
Yue Sun +6 more
doaj +1 more source
Quantum dissipation with conditional wave functions: Application to the realistic simulation of nanoscale electron devices [PDF]
, 2017 Without access to the full quantum state, modeling dissipation in an open system requires approximations. The physical soundness of such approximations relies on using realistic microscopic models of dissipation that satisfy completely positive dynamical
E. Colom'es +3 more
semanticscholar +1 more source
Timescales of Quantum Equilibration, Dissipation and Fluctuation in Nuclear Collisions. [PDF]
Physical Review Letters, 2020 Understanding the dynamics of equilibration processes in quantum systems as well as their interplay with dissipation and fluctuation is a major challenge in quantum many-body theory.
C. Simenel, K. Godbey, A. S. Umar
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