Measurement-induced nonlocality in the anisotropic Heisenberg chain

Abstract

Quantum correlations are essential for quantum information processing. Measurement-induced nonlocality (MIN) which is defined based on the projective measurement is a good measure of quantum correlation, and is favored for its potential applications. We investigate here behaviors of the geometric and entropic MIN in the two-qubit Heisenberg XY chain, and reveal effects of the anisotropic parameter $\gamma$ as well as the external magnetic field $B$ on strength of them. Our results show that both $\gamma$ and $B$ can serve as efficient controlling parameters for tuning the MIN in the XY chain.

arXiv commentFour pages, two figures