Open quantum dynamics with variational non-Gaussian states and the truncated Wigner approximation

Autor:	Bond, Liam J., Gerritsen, Bas, Minář, Jiří, Young, Jeremy T., Schachenmayer, Johannes, Safavi-Naini, Arghavan
Rok vydání:	2024
Předmět:	Quantum Physics Condensed Matter - Quantum Gases Physics - Chemical Physics
Druh dokumentu:	Working Paper
Popis:	We present a framework for simulating the open dynamics of spin-boson systems by combing variational non-Gaussian states with a quantum trajectories approach. We apply this method to a generic spin-boson Hamiltonian that has both Tavis-Cummings and Holstein type couplings, and which has broad applications to a variety of quantum simulation platforms, polaritonic physics, and quantum chemistry. Additionally, we discuss how the recently developed truncated Wigner approximation for open quantum systems can be applied to the same Hamiltonian. We benchmark the performance of both methods and identify the regimes where each method is best suited to. Finally we discuss strategies to improve each technique. Comment: 21+3 pages, 12+2 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2407.02617 Zobrazit plný text záznamu View this record from Arxiv