6533b857fe1ef96bd12b43aa

RESEARCH PRODUCT

Quantum Non-Markovian Collision Models from Colored-Noise Baths

Francesco CiccarelloDario Cilluffo

subject

CouplingPhysicssymbols.namesakeClassical mechanicsColors of noiseAtomsymbolsRotating wave approximationMarkov processCollision modelCollisionQuantum

description

A quantum collision model (CM), also known as repeated interactions model, can be built from the standard microscopic framework where a system S is coupled to a white-noise bosonic bath under the rotating wave approximation, which typically results in Markovian dynamics. Here, we discuss how to generalize the CM construction to the case of frequency-dependent system–bath coupling, which defines a class of colored-noise baths. This leads to an intrinsically non-Markovian CM, where each ancilla (bath subunit) collides repeatedly with S at different steps. We discuss the illustrative example of an atom in front of a mirror in the regime of non-negligible retardation times.

yearjournalcountryeditionlanguage
2019-01-01
https://doi.org/10.1007/978-3-030-31146-9_3