Effects of prepared states and Unruh temperature on Measurement-Induced-Nonlocality

TL;DR

This paper investigates how initial quantum states and Unruh temperature influence Measurement-Induced-Nonlocality (MIN), revealing that temperature and state parameters significantly affect MIN's behavior and its relation to other quantum correlations.

Contribution

It demonstrates the effects of Unruh temperature and initial state parameters on MIN and compares MIN with other quantum correlations, highlighting its generality over Bell nonlocality.

Findings

MIN decreases with increasing Unruh temperature between modes A and I.

MIN increases with Unruh temperature between modes A and II.

MIN is always greater than or equal to geometric discord, and more general than Bell nonlocality.

Abstract

How the prepared states and Unruh effect affect Measurement-Induced-Nonlocality (MIN) is studied. We show that, as the Unruh temperature increases, the MIN between modes $\mathrm{A}$ and $\mathrm{I}$ decreases but the MIN between modes $\mathrm{A}$ and $\mathrm{II}$ increases. We prove that the parameters $c_i$ which decide initial prepared states affect not only the values of the MIN, but also the dynamical behavior of it. By comparing the MIN with the maximal expectation values of CHSH inequality and geometric discord between modes $\mathrm{A}$ and $\mathrm{I}$, we also find that the MIN is more general than the quantum nonlocality related to violation of Bell's inequalities, and its values is always equal or bigger than that of the geometric discord.