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We examine the hydrostatic stress of electrons strongly confined in a quasi-2D quantum well in the presence of a strong perpendicular and weak in-plane magnetic field. This introduces anisotropy into the stress tensor which is inconsistent…

介观与纳米尺度物理 · 物理学 2024-12-18 Ian Osborne , Gustavo M. Monteiro , Barry Bradlyn

We investigate interference effects of the backscattering current through a double-barrier structure in an interacting quantum wire attached to noninteracting leads. Depending on the interaction strength and the location of the barriers,…

介观与纳米尺度物理 · 物理学 2015-05-18 Shaoqing Wang , Liling Zhou , Zhao Yang Zeng

A theory of quantum-mechanical generation of cosmological perturbations is considered. The conclusion of this study is that if the large-angular-scale anisotropy in the cosmic microwave background radiation is caused by the long-wavelength…

广义相对论与量子宇宙学 · 物理学 2009-09-25 L. P. Grishchuk

We report two surprising results regarding the nature of the spatial broken symmetries in the two-dimensional (2D), quarter-filled band with strong electron-electron interactions. First, in direct contradiction to the predictions of…

强关联电子 · 物理学 2016-08-31 S. Mazumdar , R. T. Clay , D. K. Campbell

In this paper, we study excitations and dissipation in two infinite parallel metallic plates undergoing relative motion. The degrees of freedom of the electrons in both plates are modeled using the 1+2 dimensional Dirac field, and a…

量子物理 · 物理学 2026-05-19 Feiyi Liu , Min Guo , Mingyang Liu , Ruanjing Zhang , Yang Wang

The dynamics of two two-level dipole-dipole interacting atoms coupled to a common electromagnetic bath and closely located inside a lossy cavity, is reported. Initially injecting only one excitation in the two atoms-cavity system, loss…

量子物理 · 物理学 2009-11-10 S. Nicolosi , A. Napoli , A. Messina , F. Petruccione

Quantum corrections to charge transport can give rise to an oscillatory magnetoconductance, typically observed in mesoscopic samples with a length shorter than or comparable with the phase coherence length. Here, we report the observation…

介观与纳米尺度物理 · 物理学 2017-03-01 C. W. Rischau , S. Wiedmann , G. Seyfarth , D. LeBoeuf , K. Behnia , B. Fauqué

We investigate the generation and the evolution of two-mode continuous-variable (CV) entanglement from system of a microwave-driven V-type atom in a quantum beat laser. By taking into account the effects of spontaneously generated quantum…

量子物理 · 物理学 2015-06-19 Wen-Xing Yang , Ai-Xi Chen , Ting-Ting Zha , Yanfeng Bai , Ray-Kuang Lee

A theory of transport in the quantum Hall regime is developed for separately contacted double-layer electron systems. Inter-layer tunneling provides a channel for equilibration of the distribution functions in the two layers at the edge…

介观与纳米尺度物理 · 物理学 2009-10-30 Daijiro Yoshioka

We define a mesoscopic ring in a 2-dimensional electron gas (2DEG) interrupted by two tunnel barriers, enabling us to apply a well-defined potential difference between the two halves of the ring. The electron interference in the ring is…

The simultaneous presence of two competing inter-particle interactions can lead to the emergence of new phenomena in a many-body system. Among others, such effects are expected in dipolar Bose-Einstein condensates, subject to dipole-dipole…

量子气体 · 物理学 2016-10-20 Igor Ferrier-Barbut , Matthias Schmitt , Matthias Wenzel , Holger Kadau , Tilman Pfau

We investigate sequential tunneling through a multilevel quantum dot confining multiple electrons, in the regime where several channels are available for transport within the bias window. By analyzing solutions to the master equations of…

介观与纳米尺度物理 · 物理学 2009-02-23 Eduardo Vaz , Jordan Kyriakidis

A set of stacked two-dimensional electron systems in a perpendicular magnetic field exhibits a three-dimensional version of the quantum Hall effect if interlayer tunneling is not too strong. When such a sample is in a quantum Hall plateau,…

介观与纳米尺度物理 · 物理学 2009-11-11 J. W. Tomlinson , J. -S. Caux , J. T. Chalker

In the first part of the present work, the correction to photon emission rate of an oscillating two-level atom in the presence of electromagnetic quantum vacuum field has been investigated for two different configurations: (i) Atom is…

量子物理 · 物理学 2020-01-29 F. Chegini , F. Kheirandish , M. R. Setare

Tunneling and Coulomb drag are sensitive probes of spontaneous interlayer phase coherence in bilayer two-dimensional electron systems at total Landau level filling factor $\nu_T = 1$. We find that the phase boundary between the interlayer…

介观与纳米尺度物理 · 物理学 2009-11-10 I. B. Spielman , M. Kellogg , J. P. Eisenstein , L. N. Pfeiffer , K. W. West

We examine the entanglement induced by an angular momentum coupling between two harmonic systems. The Hamiltonian corresponds to that of a charged particle in a uniform magnetic field in an anisotropic quadratic potential, or equivalently,…

量子物理 · 物理学 2015-06-03 L. Rebón , R. Rossignoli

We present a theoretical study of the directionality effects in spontaneous emission and resonance fluorescence of a quantum two-level dipole emitter near an ultrathin closely packed periodically aligned single-wall carbon nanotube film.…

介观与纳米尺度物理 · 物理学 2024-10-15 Michael D. Pugh , SK Firoz Islam , Igor V. Bondarev

We report on a theoretical study of the transport properties of two coupled two-dimensional electron systems subject to in-plane magnetic fields. The charge redistribution in double wells induced by the Lorenz force in crossed electric and…

介观与纳米尺度物理 · 物理学 2009-11-07 J. Kolorenc , L. Smrcka , P. Streda

We study the intra-planar tunneling between quantum Hall samples separated by a quasi one-dimensional barrier, induced through the interaction of edge degrees of freedom with the charge density waves of a Hall crystal defined in a parallel…

介观与纳米尺度物理 · 物理学 2009-11-07 L. Moriconi

It is shown that in rather strong magnetic field the interlayer electron conductivity is exponentially damped by the Coulomb barrier arising from the formation of polaron around each localized electron state. The theoretical model is…

介观与纳米尺度物理 · 物理学 2015-06-03 Pavel D. Grigoriev