Rate Operator Unraveling for Open Quantum System Dynamics

被引:17
作者
Smirne, Andrea [1 ,2 ,3 ]
Caiaffa, Matteo [4 ,5 ]
Piilo, Jyrki [6 ,7 ]
机构
[1] Univ Milan, Dipartimento Fis Aldo Pontremoli, Via Celoria 16, I-20133 Milan, Italy
[2] Ist Nazl Fis Nucl, Sez Milano, Via Celoria 16, I-20133 Milan, Italy
[3] Univ Ulm, Inst Theoret Phys, Albert Einstein Allee 11D, D-89069 Ulm, Germany
[4] Univ Strathclyde, SUPA, Glasgow G4 ONG, Lanark, Scotland
[5] Univ Strathclyde, Dept Phys, Glasgow G4 ONG, Lanark, Scotland
[6] Univ Turku, QTF Ctr Excellence, Turku Ctr Quantum Phys, Dept Phys & Astron, FI-20014 Turun, Finland
[7] Univ Turku, Dept Phys & Astron, Lab Quantum Opt, FI-20014 Turun, Finland
基金
芬兰科学院;
关键词
JUMPS; STATES; TIME;
D O I
10.1103/PhysRevLett.124.190402
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Stochastic methods with quantum jumps are often used to solve open quantum system dynamics. Moreover, they provide insight into fundamental topics, such as the role of measurements in quantum mechanics and the description of non-Markovian memory effects. However, there is no unified framework to use quantum jumps to describe open-system dynamics in any regime. We solve this issue by developing the rate operator quantum jump (ROQJ) approach. The method not only applies to both Markovian and non-Markovian evolutions, but also allows us to unravel master equations for which previous methods do not work. In addition, ROQJ yields a rigorous measurement-scheme interpretation for a wide class of dynamics, including a set of master equations with negative decay rates, and sheds light on different types of memory effects which arise when using stochastic quantum jump methods.
引用
收藏
页数:6
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