title: Quantum discord protection from amplitude damping decoherence.
abstract: Entanglement is known to be an essential resource for many quantum information processes. However, it is now known that some quantum features may be acheived with quantum discord, a generalized measure of quantum correlation. In this paper, we study how quantum discord, or more specifically, the measures of entropic discord and geometric discord are affected by the influence of amplitude damping decoherence. We also show that a protocol deploying weak measurement and quantum measurement reversal can effectively protect quantum discord from amplitude damping decoherence, enabling to distribute quantum correlation between two remote parties in a noisy environment.
authors.forename: Jiwon
authors.initials: J
authors.lastname: Yune
authors.forename: Kang-Hee
authors.initials: KH
authors.lastname: Hong
authors.forename: Hyang-Tag
authors.initials: HT
authors.lastname: Lim
authors.forename: Jong-Chan
authors.initials: JC
authors.lastname: Lee
authors.forename: Osung
authors.initials: O
authors.lastname: Kwon
authors.forename: Sang-Wook
authors.initials: SW
authors.lastname: Han
authors.forename: Yong-Su
authors.initials: YS
authors.lastname: Kim
authors.forename: Sung
authors.initials: S
authors.lastname: Moon
authors.forename: Yoon-Ho
authors.initials: YH
authors.lastname: Kim