Richter Marten, Hughes Stephen
Institut für Theoretische Physik, Nichtlineare Optik und Quantenelektronik, Technische Universität Berlin, Hardenbergstr. 36, EW 7-1, 10623 Berlin, Germany.
Department of Physics, Engineering Physics, and Astronomy, Queen's University, Kingston, Ontario K7L 3N6, Canada.
Phys Rev Lett. 2022 Apr 22;128(16):167403. doi: 10.1103/PhysRevLett.128.167403.
Multitime system correlation functions are relevant in various areas of physics and science, dealing with system-bath interaction including spectroscopy and quantum optics, where many of these schemes include an off-diagonal system bath interaction. Here we extend the enhanced time-evolving matrix product operator (eTEMPO) algorithm for quantum path integrals using tensor networks [Phys. Rev. Lett. 123, 240602 (2019)PRLTAO0031-900710.1103/PhysRevLett.123.240602 to open quantum systems with off-diagonal coupling beyond a single two level system. We exemplify the approach on a coupled cavity waveguide system with spatially separated quantum two-state emitters, though many other applications in material science are possible, including entangled photon propagation, photosynthesis spectroscopy, and on-chip quantum optics with realistic dissipation.
多时间系统关联函数在物理学和科学的各个领域都具有相关性，涉及包括光谱学和量子光学在内的系统 - 环境相互作用，其中许多此类方案都包含非对角系统 - 环境相互作用。在此，我们将使用张量网络的量子路径积分的增强时间演化矩阵乘积算符（eTEMPO）算法[《物理评论快报》123, 240602 (2019)PRLTAO0031 - 900710.1103/PhysRevLett.123.240602]扩展到具有非对角耦合的开放量子系统，且不限于单个二能级系统。我们以具有空间分离的量子二态发射体的耦合腔波导系统为例来说明该方法，不过在材料科学中还有许多其他应用也是可能的，包括纠缠光子传播、光合作用光谱学以及具有实际耗散的片上量子光学。
