Variational dynamics of open quantum systems in phase space

We present a method to simulate the dynamics of large driven-dissipative many-body open quantum systems using a variational encoding of the Wigner or Husimi-Q quasi-probability distributions. The method relies on Monte-Carlo sampling to maintain a polynomial computational complexity while allowing f...

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Bibliographic Details
Published in:arXiv.org 2023-07
Main Authors: Eeltink, Debbie, Vicentini, Filippo, Savona, Vincenzo
Format: Article
Language:English
Subjects:
Dissipation
Polynomials
Online Access:Get full text
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Summary:We present a method to simulate the dynamics of large driven-dissipative many-body open quantum systems using a variational encoding of the Wigner or Husimi-Q quasi-probability distributions. The method relies on Monte-Carlo sampling to maintain a polynomial computational complexity while allowing for several quantities to be estimated efficiently. As a first application, we present a proof of principle investigation into the physics of the driven-dissipative Bose-Hubbard model with weak nonlinearity, providing evidence for the high efficiency of the phase space variational approach.
ISSN:2331-8422