AI Article Synopsis
- The text introduces quantum maps related to collisional reservoirs that can lead to thermalization when paired with a dephasing mechanism.
- These maps facilitate transitions between different states while also creating coherences, which can hinder thermalization.
- The study shows that at low collision rates, a combination of these quantum maps and a dephasing unitary evolution leads to thermalization, providing insights into the underlying conditions and the thermalization process through a scattering theory approach.
Article Abstract
We introduce a wide class of quantum maps that arise in collisional reservoirs and are able to thermalize a system if they operate in conjunction with an additional dephasing mechanism. These maps describe the effect of collisions and induce transitions between populations that obey detailed balance, but also create coherences that prevent the system from thermalizing. We combine these maps with a unitary evolution acting during random Poissonian times between collisions and causing dephasing. We find that, at a low collision rate, the nontrivial combination of these two effects causes thermalization in the system. This scenario is suitable for modeling collisional reservoirs at equilibrium. We justify this claim by identifying the conditions for such maps to arise within a scattering theory approach and provide a thorough characterization of the resulting thermalization process.
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| http://dx.doi.org/10.1103/PhysRevLett.130.200402 | DOI Listing |
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