title: Non-Markovian particle dynamics in continuously controlled quantum gases.
abstract: For a quantum gas, being subject to continuous feedback of a macroscopic observable, the single-particle dynamics is studied. Despite feedback-induced particle correlations, it is shown that analytic solutions are obtained by formally extending the single-particle Hilbert space by an auxiliary degree of freedom. The particle's motion is then fed by colored noise, which effectively maps quantum-statistical correlations onto the single particle. Thus, the single particle in the continuously controlled gas follows a non-Markovian trajectory in phase space.
authors.affiliation: Fachbereich Physik, Universität Rostock, Universitätsplatz 3, D-18051 Rostock, Germany.
authors.forename: D
authors.initials: D
authors.lastname: Ivanov
authors.forename: S
authors.initials: S
authors.lastname: Wallentowitz