Measurement-induced nonlocality in arbitrary dimensions in terms of the inverse approximate joint diagonalization

Li-qiang Zhang, Ting-ting Ma, Chang-shui Yu

Published 2019-03-18Version 1

Here we focus on the measurement induced nonlocality and present a redefinition in terms of the skew information subject to a broken observable. It is shown that the obtained quantity possesses an obvious operational meaning, can tackle the noncontractivity of the measurement induced nonlocality and has analytic expressions for many quantum states. Most importantly, an inverse approximate joint diagonalization algorithm, due to its simplicity, high efficiency, stability, and state independence, is presented to provide almost analytic expressions for any quantum state, which can also shed light on other aspects in physics.