Quantum discord protection from amplitude damping decoherence

Title
Quantum discord protection from amplitude damping decoherence
Authors
윤지원홍강희임향택이종찬권오성한상욱김용수문성욱김윤호
Keywords
Quantum correlation; Quantum discord; Decoherence; Weak measurement
Issue Date
2015-09
Publisher
Optics express
Citation
VOL 23, NO 20, 26012-26022
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.
URI
http://pubs.kist.re.kr/handle/201004/50325
ISSN
10944087
Appears in Collections:
KIST Publication > Article
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