Work

Wigner dynamics for quantum gases under inhomogeneous gain and loss processes with dephasing

Year: 2023

Type: article

Abstract: We present a Wigner function-based approach for the particle density evolution in fermionic and bosonic open quantum many-body systems, including the effects of dephasing. In particular, we focus on chains of noninteracting particles coupled to Lindblad baths. The dissipative processes, described by linear and quadratic jump operators, are modulated by inhomogeneous couplings. Following a semiclassical approach, we find the differential equation governing the Wigner function evolution, which can be solved in closed form in some particular cases. We check the accuracy of the Wigner approach in different scenarios (i.e., Gaussian jump rates), describing the density evolution and the transport phenomena in terms of classical quasiparticles.

Source: Physical Review A

DOI: 10.1103/physreva.107.052213

Authors: Michele Coppola, Gabriel T. Landi, Dragi Karevski

Institutions: Centre National de la Recherche Scientifique, Laboratoire de Physique et Chimie Théoriques, Université de Lorraine, Universidade de São Paulo, University of Rochester

Language: English

Topic: Quantum many-body systems

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Agence Nationale de la Recherche, Fundação de Amparo à Pesquisa do Estado de São Paulo, Conselho Nacional de Desenvolvimento Científico e Tecnológico, Instituto Nacional de Ciência e Tecnologia de Informação Quântica