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arXiv · 2307.07429

Variational dynamics of open quantum systems in phase space

Debbie Eeltink·Filippo Vicentini·Vincenzo Savona
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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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Debbie Eeltink, Filippo Vicentini, Vincenzo Savona. 2023-07-14. Variational dynamics of open quantum systems in phase space. https://arxiv.org/abs/2307.07429

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