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

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.,...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2009-07, Vol.80 (1), Article 012104
Main Authors: Mazzola, L., Maniscalco, S., Piilo, J., Suominen, K.-A., Garraway, B. M.
Format: Article
Language:English
Subjects:
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
HARMONIC OSCILLATORS
MARKOV PROCESS
OSCILLATION MODES
QUANTUM MECHANICS
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Summary: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.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.80.012104