The trace distance between two states of an open quantum system quantifies their distinguishability and, for a fixed environmental state, can increase above its initial value only in the presence of initial system-environment correlations. We provide experimental evidence of such a behavior. In our all-optical apparatus, we exploit spontaneous parametric down conversion as a source of polarization entangled states and a spatial light modulator to introduce in a general fashion correlations between the polarization and the momentum degrees of freedom, which act as environment.

Experimental investigation of initial system-environment correlations via trace-distance evolution / A. Smirne, D. Brivio, S. Cialdi, B. Vacchini, M. Paris. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - 84:3(2011), pp. 032112.032112-1-032112.032112-5.

Experimental investigation of initial system-environment correlations via trace-distance evolution

A. Smirne
Primo
;
D. Brivio
Secondo
;
S. Cialdi;B. Vacchini
Penultimo
;
M. Paris
Ultimo
2011

Abstract

The trace distance between two states of an open quantum system quantifies their distinguishability and, for a fixed environmental state, can increase above its initial value only in the presence of initial system-environment correlations. We provide experimental evidence of such a behavior. In our all-optical apparatus, we exploit spontaneous parametric down conversion as a source of polarization entangled states and a spatial light modulator to introduce in a general fashion correlations between the polarization and the momentum degrees of freedom, which act as environment.
entangled photon pairs; rediced dynamics; generation; states; laser
Settore FIS/02 - Fisica Teorica, Modelli e Metodi Matematici
Settore FIS/03 - Fisica della Materia
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/164704
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