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Geometric phase induced by a cyclically evolving squeezed vacuum reservoir

Angelo Carollo·G. Massimo Palma·Artur Lozinski·Marcelo Franca Santos·Vlatko Vedral
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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 analyse a multilevel atom interacting with a broad-band 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 propose also a scheme to measure such geometric phase by means of a suitable polarization detection.

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Angelo Carollo, G. Massimo Palma, Artur Lozinski, Marcelo Franca Santos, Vlatko Vedral. 2006-04-21. Geometric phase induced by a cyclically evolving squeezed vacuum reservoir. https://doi.org/10.1103/physrevlett.96.150403

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