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Coupled surface plasmon/phonon polaritons and hyperbolic modes are known to enhance radiative transport across nanometer vacuum gaps but usually require identical materials. It becomes crucial to achieve strong near-field energy transfer…

介观与纳米尺度物理 · 物理学 2016-08-03 Jui-Yung Chang , Yue Yang , Liping Wang

We investigate the interaction of two two-level qubits with a single mode quantum field in a cavity without rotating wave approximation and considering that qubits can be located at an arbitrary distance from each other. We demonstrate that…

量子物理 · 物理学 2020-10-14 I. D. Feranchuk , N. Q. San , A. U. Leonau , O. D. Skoromnik

This third paper in this series continues the investigation of atom-field interactions in the presence of a conductor or a dielectric medium, focusing on quantum information related basic issues such as decoherence and entanglement. Here we…

量子物理 · 物理学 2025-07-29 Jen-Tsung Hsiang , Bei-Lok Hu

Warming in complex physical systems, in particular global warming, attracts significant contemporary interest. It is essential, therefore, to understand basic physical mechanisms leading to overheating. It is well known that application of…

介观与纳米尺度物理 · 物理学 2008-07-04 N. Romero Kalmanovitz , A. A. Bykov , S. A. Vitkalov , A. I. Toropov

We study the dynamics of a complex open quantum many-body system. The coupling to external degrees of freedom can be viewed as a coupling to a radiation field, to continuum states or to a measuring apparatus. This perturbation is treated in…

量子物理 · 物理学 2009-11-10 Alexander Volya , Vladimir Zelevinsky

Common intuition tells us that if one part of a connected system is cooled continuously, the other parts should also cool down. This intuition can be given a microscopic foundation for the case of a generic quantum system coupled to a…

统计力学 · 物理学 2024-12-11 Jaswanth Uppalapati , Paul A McClarty , Masudul Haque , Shovan Dutta

It has recently been shown theoretically that the time-dependent heat conduction equation is form-invariant under curvilinear coordinate transformations. Thus, in analogy to transformation optics, fictitious transformed space can be mapped…

材料科学 · 物理学 2013-05-14 Robert Schittny , Muamer Kadic , Sebastien Guenneau , Martin Wegener

The effects of thermal coupling between two thin liquid layers, separated by a gas layer, are discussed. The liquid layers undergo long-wavelength instabilities driven by gravitational and thermocapillary stresses. To study the dynamics,…

斑图形成与孤子 · 物理学 2014-07-14 Miklós Vécsei , Mathias Dietzel , Steffen Hardt

We study heat conduction in a system of hard disks confined to a narrow two dimensional channel. The system is initially in a high density solid-like phase. We study, through nonequilibrium molecular dynamics simulations, the dependence of…

统计力学 · 物理学 2009-11-11 Debasish Chaudhuri , Abhishek Dhar

We study the system that two atoms simultaneously interact with a single-mode thermal field via different couplings and different spontaneous emission rates when two-photon process is involved. It is found that we indeed can employ the…

量子物理 · 物理学 2009-09-29 Y. Q. Guo , L. Zhou , H. S. Song

The effect of a thermal environment on electron (or hole) transfer through molecular bridges and on the electron conduction properties of such bridges is studied. Our steady state formalism based on an extension of the Redfield theory (D.…

凝聚态物理 · 物理学 2009-11-07 Dvira Segal , Abraham Nitzan

Metallic atomic junctions pose the ultimate limit to the scaling of electrical contacts. They serve as model systems to probe electrical and thermal transport down to the atomic level as well as quantum effects occurring in one-dimensional…

介观与纳米尺度物理 · 物理学 2017-05-24 Nico Mosso , Ute Drechsler , Fabian Menges , Peter Nirmalraj , Siegfried Karg , Heike Riel , Bernd Gotsmann

In this review paper we discuss the effects of pairing correlations on inner crust matter in the density region where nuclear clusters are supposed to coexist with nonlocalised neutrons. The pairing correlations are treated in the framework…

核理论 · 物理学 2012-01-16 Jérôme Margueron , N. Sandulescu

Quantum systems strongly coupled to many-body systems equilibrate to the reduced state of a global thermal state, deviating from the local thermal state of the system as it occurs in the weak-coupling limit. Taking this insight as a…

量子物理 · 物理学 2018-03-28 M. Perarnau-Llobet , H. Wilming , A. Riera , R. Gallego , J. Eisert

We develop a dynamical theory of heat transfer between two nano systems. In particular, we consider the resonant heat transfer between two nanoparticles due to the coupling of localized surface modes having a finite spectral width. We model…

介观与纳米尺度物理 · 物理学 2013-02-27 Svend-Age Biehs , Girish S. Agarwal

Kinematic constraint arising in the case of superconducting pairing with large momentum results in a cutoff of the screened Coulomb potential excluding large momentum transfers. This leads to a pairing potential oscillating in the real…

超导电性 · 物理学 2007-05-23 V. I. Belyavsky , Yu. V. Kopaev

A parametric study of Drude and Lorentz models performances in maximizing near-field radiative heat transfer between two semi-infinite planes separated by nanometric distances at room temperature is presented in this paper. Optimal…

介观与纳米尺度物理 · 物理学 2013-07-19 Elyes Nefzaoui , Younès Ezzahri , Jérémie Drevillon , Karl Joulain

Understanding inter-site mutual mode interaction in coupled physical systems is essential to comprehend large compound systems as this local interaction determines the successive multiple inter-site energy transfer efficiency. We…

We present a theoretical analysis that demonstrates that the far-field radiative heat transfer between objects with dimensions smaller than the thermal wavelength can overcome the Planckian limit by orders of magnitude. We illustrate this…

The radiation-pressure interaction between electromagnetic fields and mechanical resonators can be used to efficiently entangle two light fields which couple to a single mechanical mode. We analyze the performance of this process under…

量子物理 · 物理学 2015-07-03 Muhammad Asjad , Stefano Zippilli , Paolo Tombesi , David Vitali