Nonlocal quantum correlations under amplitude damping decoherence

Tanumoy Pramanik, Young Wook Cho, Sang Wook Han, Sang Yun Lee, Sung Moon, Yong Su Kim

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


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.

Original languageEnglish
Article number042311
JournalPhysical Review A
Issue number4
Publication statusPublished - 2019 Oct 14

Bibliographical note

Funding Information:
This work was supported by the NRF programs (2019M3E4A1079526, 2019R1A2C2006381), and the KIST research program (2E29580). APPENDIX A:

Publisher Copyright:
© 2019 American Physical Society.

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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