title: Geometric phase induced by a cyclically evolving squeezed vacuum reservoir.
abstract: We propose a new way to generate an observable geometric phase by means of a completely incoherent phenomenon. We show how to imprint a geometric phase to a system by adiabatically manipulating the environment with which it interacts. As a specific scheme, we analyze a multilevel atom interacting with a broadband squeezed vacuum bosonic bath. As the squeezing parameters are smoothly changed in time along a closed loop, the ground state of the system acquires a geometric phase. We also propose a scheme to measure such a geometric phase by means of a suitable polarization detection.
authors.affiliation: Centre for Quantum Computation, DAMTP, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA, United Kingdom.
authors.forename: Angelo
authors.initials: A
authors.lastname: Carollo
authors.forename: G
authors.initials: G
authors.lastname: Massimo Palma
authors.forename: Artur
authors.initials: A
authors.lastname: Lozinski
authors.forename: Marcelo França
authors.initials: MF
authors.lastname: Santos
authors.forename: Vlatko
authors.initials: V
authors.lastname: Vedral