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A unified theoretical description of ballistic and diffusive carrier transport in parallel-plane semiconductor structures is developed within the semiclassical model. The approach is based on the introduction of a thermo-ballistic current…

材料科学 · 物理学 2009-11-10 R. Lipperheide , U. Wille

An interacting system subjected to a strong linear potential can host a many-body localized (MBL) phase when being slightly perturbed. This so-called Wannier-Stark or `tilted-field' MBL phase inherits many properties from the…

无序系统与神经网络 · 物理学 2021-10-15 Elisabeth Wybo , Michael Knap , Frank Pollmann

In this paper, we investigate the vacuum bosonic current density induced by a carrying-magnetic-flux cosmic string in a $(D+1)$-de Sitter spacetime considering the presence of two flat boundaries perpendicular to it. In this setup, the…

高能物理 - 理论 · 物理学 2024-12-05 W. Oliveira dos Santos , H. F. Santana Mota , E. R. Bezerra de Mello

The role of noise in the transport properties of quantum excitations is a topic of great importance in many fields, from organic semiconductors for technological applications to light-harvesting complexes in photosynthesis. In this paper we…

量子物理 · 物理学 2016-11-22 Stefano Iubini , Octavi Boada , Yasser Omar , Francesco Piazza

We discuss stochastic resonance-like effects in the context of coupled quantum spin systems. We focus here on an information-theoretic approach and analyze the steady state quantum correlations (entanglement) as well as the global…

量子物理 · 物理学 2009-05-14 Ángel Rivas , Neil P. Oxtoby , Susana F. Huelga

We study nonequilibrium transport and noise in a generic dissipative tight-binding model. Within a real-time path integral approach, we derive formally exact series expressions in the number of tunneling events for the noise valid for…

强关联电子 · 物理学 2017-09-27 Gunther Lang , Ulrich Weiss

We consider a one-dimensional chain of coupled oscillators in contact at both ends with heat baths at different temperatures, and subject to an external force at one end. The Hamiltonian dynamics in the bulk is perturbed by random exchanges…

概率论 · 数学 2019-09-12 Tomasz Komorowski , Stefano Olla , Marielle Simon

Quantum communications require efficient implementations of quantum state transportation with high fidelity. Here, we consider the transport of entanglement along a chain of qubits. A series of SWAP operations involving successive pairs of…

量子物理 · 物理学 2022-01-28 Gourab Das , Rangeet Bhattacharyya

Quantum transport and localization are fundamental concepts in condensed matter physics. It is commonly believed that in one-dimensional systems, the existence of mobility edges is highly dependent on disorder. Recently, there has been a…

We study the stabilization of coherent suppression of tunneling in a driven double-well system subject to random periodic $\delta-$function ``kicks''. We model dissipation due to this stochastic process as a phase diffusion process for an…

量子物理 · 物理学 2009-11-06 J. Grondalski , P. M. Alsing , I. H. Deutsch

We investigate the quantum temporal steering (TS), i.e., a temporal analogue of Einstein-Podolsky-Rosen steering, in a dephasing channel which is modeled by a central spin half surrounded by a spin-1/2 \textit{XY} chain where quantum phase…

量子物理 · 物理学 2018-04-17 Bo Liu , Yixiao Huang , Zhe Sun

We investigate electrical transport in a quantum wire of $N$ sites connected to an equal number $(N_i/2)$ of sources and drains of charges in bulk. Each source and drain injects and extracts charges at the same rate, respectively. We show…

介观与纳米尺度物理 · 物理学 2025-02-28 Rupak Bag , Dibyendu Roy

One-dimensional non-equilibrium models of particles subjected to a coagulation-diffusion process are important in understanding non-equilibrium dynamics, and fluctuation-dissipation relation. We consider in this paper transport properties…

统计力学 · 物理学 2015-06-18 Jean-Yves Fortin

Charge transport in crystalline organic semiconductors is intrinsically limited by the presence of large thermal molecular motions, which are a direct consequence of the weak van der Waals inter-molecular interactions. These lead to an…

材料科学 · 物理学 2018-06-18 S. Fratini , D. Mayou , S. Ciuchi

Quantum teleportation in the presence of noisy channels acting on a bipartite resource state is considered. We consider a family of generalized noisy channels that continuously connect the amplitude damping and the dephasing channels,…

量子物理 · 物理学 2024-04-16 Victor H. T. Brauer , Andrea Valdés-Hernández

We study transport in a one-dimensional boundary-driven Anderson insulator (the XX spin chain with onsite disorder) with randomly positioned onsite dephasing, observing a transition from diffusive to subdiffusive spin transport below a…

无序系统与神经网络 · 物理学 2021-05-12 Scott Richard Taylor , Antonello Scardicchio

We study the transport properties of a quantum wire, described by the Tomonaga-Luttinger model, in the presence of a backscattering potential provided by several extended time-dependent impurities (barriers). Employing the B\"…

强关联电子 · 物理学 2010-07-08 D. Makogon , V. Juricic , C. Morais Smith

We propose to optimally control the harmonic potential of a levitated nanoparticle to quantum delocalize its center-of-mass motional state to a length scale orders of magnitude larger than the quantum zero-point motion. Using a bang-bang…

量子物理 · 物理学 2021-07-30 T. Weiss , M. Roda-Llordes , E. Torrontegui , M. Aspelmeyer , O. Romero-Isart

Based on dynamical density functional theory (DDFT) we consider a non-equilibrium system of interacting colloidal particles driven by a constant tilting force through a periodic, symmetric "washboard" potential. We demonstrate that, despite…

软凝聚态物质 · 物理学 2015-05-19 Ken Lichtner , Sabine H. L. Klapp

We study spin transport in a boundary driven XXZ spin chain. Driving at the chain boundaries is modeled by two additional spin chains prepared in oppositely polarized states. Emergent behavior, both in the transient dynamics and in the…

量子物理 · 物理学 2017-12-21 Eduardo Mascarenhas , Giacomo Giudice , Vincenzo Savona