Scientific Results

Asymmetric many-body loss in a bosonic double well

Year: 2018

Authors: Denis Z., Tiene A., Salasnich L., Wimberger S.

Autors Affiliation: [Denis, Zakari; Wimberger, Sandro] Univ Parma, Dipartimento Sci Matemat Fis & Informat, Campus Univ,Parco Area Sci n 7-a, I-43124 Parma, Italy.
[Denis, Zakari] Univ Paris 11, Univ Paris Saclay, F-91405 Orsay, France.
[Tiene, Antonio] Univ Padua, Dipartimento Fis & Astron Galileo Galilei, Via Marzolo 8, I-35131 Padua, Italy.
[Salasnich, Luca] Univ Padua, CNISM, Via Marzolo 8, I-35131 Padua, Italy and CNR, INO, Via Nello Carrara 1, I-50019 Sesto Fiorentino, Italy.
[Wimberger, Sandro] INFN, Sez Milano Bicocca, Grp Collegato Parma, I-43124 Parma, Italy.

Abstract: A Bose gas in a double well is investigated in the presence of single-particle, two-body, and three-body asymmetric loss. The loss induces an interesting decay behavior of the total population as well as a possibility to control the dynamics of the system. In the noninteracting limit with asymmetric single-body dissipation, the dynamics of the populations can be obtained analytically. The general many-body problem requires, however, an adequate approximation. We use a mean-field approximation and the Bogoliubov back reaction beyond mean-field truncation, which we extend up to three-body loss. Both methods are compared with exact many-body Monte Carlo simulations.


Volume: 97 (1)      Pages from: 013602-1  to: 013602-9

KeyWords: stochastic resonance; quantum-systems; driven; states; atoms
DOI: 10.1103/PhysRevA.97.013602

Citations: 1
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