Quantum regression beyond the Born-Markov approximation for generalized spin-boson models
نویسندگان
چکیده
The quantum regression formula for an open system consists in infinite hierarchy of conditions its multi-time correlation functions, thus requiring full access to the total "system+environment" evolution, and providing a stronger requirement than CP-divisibility. Here, we analyze CP-divisibility check validity beyond Born-Markov approximation (e.g. weak coupling limit) class generalized spin-boson (GSB) models giving rise multi-level amplitude-damping evolution; all cases, it is possible engineer system-bath such way that exactly satisfied.
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ژورنال
عنوان ژورنال: Physical review
سال: 2022
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physreva.105.052435