Results 1 to 10 of about 128,075 (342)

Dissipation-induced enhancement of quantum fluctuations [PDF]

New Journal of Physics, 2016
We study a quantum harmonic oscillator linearly coupled through the position operator $\hat{q}$ to a first bath and through the momentum operator $\hat{p}$ to a second bath yielding an Ohmic–Drude dissipation.
Gianluca Rastelli
doaj   +2 more sources

Dissipative Majorana Quantum Wires [PDF]

iScience, 2019
Summary: In this paper, we formulate and quantitatively examine the effect of dissipation on topological systems. We use a specific model of Kitaev quantum wire with an onsite Ohmic dissipation and perform a numerically exact method to investigate the ...
Yizhen Huang, Alejandro M. Lobos, Zi Cai
doaj   +5 more sources

Dissipation induced localization-delocalization transition in flat band systems [PDF]

iScience
Summary: The interplay between dissipation and localization in quantum systems has garnered significant attention due to its potential to manipulate transport properties and induce phase transitions.
Mingdi Xu, Zijun Wei, Xiang-Ping Jiang, Lei Pan   +3 more
doaj   +2 more sources

Fluctuation-dissipation theorem and quantum tunneling with dissipation [PDF]

, 1998
We suggest to take the fluctuation-dissipation theorem of Callen and Welton as a basis to study quantum dissipative phenomena (such as macroscopic quantum tunneling) in a manner analogous to the Nambu-Goldstone theorem for spontaneous symmetry breakdown.
A. J. Bray, A. O. Caldeira, A. O. Caldeira, G. Schoen, H. B. Callen, H. Nakano, J. Goldstone, J. Kondo, K. Fujikawa, K. Fujikawa, K. Yamada, Kazuo Fujikawa, N. G. Van Kampen, P. W. Anderson, R. Kubo, R. P. Feynman, S. Chakravarty, Y. Nambu   +17 more
core   +4 more sources

Towards the Resolution of a Quantized Chaotic Phase-Space: The Interplay of Dynamics with Noise

Entropy, 2023
We outline formal and physical similarities between the quantum dynamics of open systems and the mesoscopic description of classical systems affected by weak noise.
Domenico Lippolis, Akira Shudo
doaj   +1 more source

Accurate Truncations of Chain Mapping Models for Open Quantum Systems

Nanomaterials, 2021
The dynamics of open quantum systems are of great interest in many research fields, such as for the interaction of a quantum emitter with the electromagnetic modes of a nanophotonic structure.
Mónica Sánchez-Barquilla, Johannes Feist   +1 more
doaj   +1 more source

Correlation engineering via nonlocal dissipation

Physical Review Research, 2022
Controlling the spread of correlations in quantum many-body systems is a key challenge at the heart of quantum science and technology. Correlations are usually destroyed by dissipation arising from coupling between a system and its environment.
K. Seetharam, A. Lerose, R. Fazio, J. Marino   +3 more
doaj   +1 more source

Scattering in Terms of Bohmian Conditional Wave Functions for Scenarios with Non-Commuting Energy and Momentum Operators

Entropy, 2021
Without access to the full quantum state, modeling quantum transport in mesoscopic systems requires dealing with a limited number of degrees of freedom.
Matteo Villani, Guillermo Albareda, Carlos Destefani, Xavier Cartoixà, Xavier Oriols   +4 more
doaj   +1 more source

Quantum bounds and fluctuation-dissipation relations

SciPost Physics, 2022
In recent years, there has been intense attention on the constraints posed by quantum mechanics on the dynamics of the correlation at low temperatures, triggered by the postulation and derivation of quantum bounds on the transport coefficients or on ...
Silvia Pappalardi, Laura Foini, Jorge Kurchan
doaj   +1 more source

Exponential time-scaling of estimation precision by reaching a quantum critical point

Physical Review Research, 2022
Quantum metrology refers to the use of quantum resources in parameter-estimation protocols, aiming at enhancing its precision. The quantum Fisher information is a key quantity in this context, setting the ultimate achievable precision with respect to ...
Louis Garbe, Obinna Abah, Simone Felicetti, Ricardo Puebla   +3 more
doaj   +1 more source