Variational dynamics of open quantum systems in phase space

• URL: http://arxiv.org/abs/2307.07429v1
• Date: Fri, 14 Jul 2023 15:48:31 GMT
• Title: Variational dynamics of open quantum systems in phase space
• Authors: Debbie Eeltink, Filippo Vicentini and Vincenzo Savona
• Abstract summary: We present a method to simulate the dynamics of large driven-dissipative many-body open quantum systems. We present a proof of principle investigation into the physics of the driven-dissipative Bose-Hubbard model with weak nonlinearity.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: 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.

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