Title:	Experimental test of environment-assisted invariance
Authors:	Vermeyden, L. Ma, X. Levoie, J. Bonsma, M. Sinha, Urbasi Laflamme, Raymond Resch, K .J.
Issue Date:	Jan-2015
Publisher:	American Physical Society
Citation:	Physical Review A, 2015, Vol.91, 012120
Abstract:	Envariance, or environment-assisted invariance, is a recently identified symmetry for maximally entangled states in quantum theory with important ramifications for quantum measurement, specifically for understanding Born's rule. We benchmark the degree to which nature respects this symmetry by using entangled photon pairs. Our results show quantum states can be (99.66±0.04)% envariant as measured using the quantum fidelity, and (99.963±0.005)% as measured using a modified Bhattacharya coefficient, as compared with a perfectly envariant system which would be 100% in either measure. The deviations can be understood by the less-than-maximal entanglement in our photon pairs.
Description:	Open Access
URI:	http://hdl.handle.net/2289/6248
ISSN:	1050-2947 1094-1622 (Online)
Alternative Location:	http://arxiv.org/abs/1408.7087 http://dx.doi.org/10.1103/PhysRevA.91.012120 http://adsabs.harvard.edu/abs/2015PhRvA..91a2120V
Copyright:	2015 The American Physical Society
Appears in Collections:	Research Papers (LAMP)

Items in RRI Digital Repository are protected by copyright, with all rights reserved, unless otherwise indicated.