Quantifying Tolerance of a Nonlocal Multi-Qudit State to Any Local Noise

Entropy (Basel). 2018 Mar 23;20(4):217. doi: 10.3390/e20040217.

Abstract

We present a general approach for quantifying tolerance of a nonlocal N-partite state to any local noise under different classes of quantum correlation scenarios with arbitrary numbers of settings and outcomes at each site. This allows us to derive new precise bounds in d and N on noise tolerances for: (i) an arbitrary nonlocal N-qudit state; (ii) the N-qudit Greenberger-Horne-Zeilinger (GHZ) state; (iii) the N-qubit W state and the N-qubit Dicke states, and to analyse asymptotics of these precise bounds for large N and d .

Keywords: maximal Bell violation; nonlocal N-qudit states; tolerance to any local noise.