论文标题
在高斯骨气环境中对开放系统多上期期望值的非扰动处理
Non-perturbative treatment of open-system multi-time expectation values in Gaussian bosonic environments
论文作者
论文摘要
我们在与适当的Gorini-Kossakowski-lindBlad-Sudarshan生成器固定的自由进化下进行自由进化的环境，分别与经历自由统一进化的环境或离散的环境相互作用时，确定了一般有限维开放量子系统的多时间期望值之间的条件。我们证明，如果这两个环境都是骨气和高斯，以及相应交互运算符的单时和两次相关函数始终相同，则等效性保持不变。该结果导致对运算符的多时间期望值的非扰动评估，以及通过有限数量的阻尼模式与一组连续的玻色子模式相互作用的开放量子系统的地图，从而为完全通用方案的开放系统多时间数量研究奠定了基础。
We determine the conditions for the equivalence between the multi-time expectation values of a general finite-dimensional open quantum system when interacting with, respectively, an environment undergoing a free unitary evolution or a discrete environment under a free evolution fixed by a proper Gorini-Kossakowski-Lindblad-Sudarshan generator. We prove that the equivalence holds if both environments are bosonic and Gaussian and if the one- and two-time correlation functions of the corresponding interaction operators are the same at all times. This result leads to a non-perturbative evaluation of the multi-time expectation values of operators and maps of open quantum systems interacting with a continuous set of bosonic modes by means of a limited number of damped modes, thus setting the ground for the investigation of open-system multi-time quantities in fully general regimes.
