Microscopic description for the emergence of collective dissipation in extended quantum systems.

ABSTRACT: Practical implementations of quantum technology are limited by unavoidable effects of decoherence and dissipation. With achieved experimental control for individual atoms and photons, more complex platforms composed by several units can be assembled enabling distinctive forms of dissipation and decoherence, in independent heat baths or collectively into a common bath, with dramatic consequences for the preservation of quantum coherence. The cross-over between these two regimes has been widely attributed in the literature to the system units being farther apart than the bath's correlation length. Starting from a microscopic model of a structured environment (a crystal) sensed by two bosonic probes, here we show the failure of such conceptual relation, and identify the exact physical mechani

SUBMITTER: Galve F 

PROVIDER: S-EPMC5296766 | biostudies-literature | 2017 Feb

REPOSITORIES: biostudies-literature