Pseudomodes as an effective description of memory: Non-Markovian dynamics of two-state systems in structured reservoirs



: Mazzola L, Maniscalco S, Piilo J, Suominen KA, Garraway BM

Publisher: AMER PHYSICAL SOC

: 2009

: Physical Review A

: PHYSICAL REVIEW A

: PHYS REV A

: ARTN 012104

: 80

: 1

: 5

: 1050-2947

DOI: https://doi.org/10.1103/PhysRevA.80.012104


We investigate the non-Markovian dynamics of two-state systems in structured reservoirs. We establish a connection between two theoretical quantum approaches, the pseudomodes [B. M. Garraway, Phys. Rev. A 55, 2290 (1997)] and the recently developed non-Markovian quantum jump method [J. Piilo et al., Phys. Rev. Lett. 100, 180402 (2008)]. This connection provides a clear physical picture of how the structured reservoir affects the system dynamics, suggesting the role of the pseudomodes as effective description of environmental memory.



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