Quantum discord protection of a two-qutrit V-type atomic system from decoherence by partially collapsing measurements

TL;DR

This paper presents a scheme using weak measurement and reversal to protect the geometric quantum discord of a two-qutrit atomic system from decoherence caused by amplitude damping, enhancing quantum state preservation.

Contribution

It introduces a novel protocol employing WMQMR to effectively safeguard quantum discord in a two-qutrit system against environmental decoherence.

Findings

The protocol successfully suppresses decoherence effects.

Quantum discord is preserved more effectively with the scheme.

The method works for different initial states and measurement strengths.

Abstract

In this paper, by exploiting the weak measurement and quantum measurement re- versal (WMQMR) procedure, we propose a scheme to show how one can protect the geometric quantum discord (GQD) of a two-qutrit V-type atomic system each of which interacts with a dissipative reservoir independently. We examine the scheme for the GQD of the initial two-qutrit Werner and Horodecki states for different classes of weak mea- surement strengthes. It is found out that the presented protocol enables us to suppress decoherence due to the amplitude damping (AD) channel and preserve the quantum dis- cord of the two-qutrit system successfully.