Nonlocal quantum correlations under amplitude damping decoherence

Title
Nonlocal quantum correlations under amplitude damping decoherence
Authors
문성욱한상욱김용수조영욱이상윤타누모이
Keywords
Quantum entanglement; Steering; Quantum correlation; Quantum information
Issue Date
2019-10
Publisher
Physical review. A
Citation
VOL 100-042311-8
Abstract
Different nonlocal quantum correlations of entanglement, steering and Bell nonlocality are defined with the help of local hidden state and local hidden variable models. Considering their unique roles in quantum information processing, it is of importance to understand the individual nonlocal quantum correlation as well as their relationship. Here, we investigate the effects of amplitude damping decoherence on different nonlocal quantum correlations. In particular, we have theoretically and experimentally shown that the entanglement sudden death phenomenon is distinct from those of steering and Bell nonlocality. In our scenario, we found that all the initial states present sudden death of steering and Bell nonlocality, while only some of the states show entanglement sudden death. These results suggest that the environmental effect can be different for different nonlocal quantum correlations and, thus, it provides distinct operational interpretations of different quantum correlations.
URI
http://pubs.kist.re.kr/handle/201004/70130
ISSN
2469-9926
Appears in Collections:
KIST Publication > Article
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