Continuous-Variable Assisted Thermal Quantum Simulation.

  title={Continuous-Variable Assisted Thermal Quantum Simulation.},
  author={Dan-Bo Zhang and Guo-Qing Zhang and Zheng‐Yuan Xue and Shi-Liang Zhu and Z. D. Wang},
  journal={Physical review letters},
  volume={127 2},
Simulation of a quantum many-body system at finite temperatures is crucially important but quite challenging. Here we present an experimentally feasible quantum algorithm assisted with continuous variable for simulating quantum systems at finite temperatures. Our algorithm has a time complexity scaling polynomially with the inverse temperature and the desired accuracy. We demonstrate the quantum algorithm by simulating a finite temperature phase diagram of the quantum Ising and Kitaev models… 

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