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

Journal Article · · Physical Review. A
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  1. Dipartimento di Fisica, Universita degli Studi di Milano, Via Celoria 16, I-20133 Milan (Italy)
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.
OSTI ID:
22068634
Journal Information:
Physical Review. A, Journal Name: Physical Review. A Journal Issue: 3 Vol. 84; ISSN 1050-2947; ISSN PLRAAN
Country of Publication:
United States
Language:
English

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