Protecting entanglement from decoherence using weak measurement and quantum measurement reversal
SCIE
SCOPUS
- Title
- Protecting entanglement from decoherence using weak measurement and quantum measurement reversal
- Authors
- Kim, YS; Lee, JC; Kwon, O; Kim, YH
- Date Issued
- 2012-02
- Publisher
- NATURE PUBLISHING GROUP
- Abstract
- Decoherence, often caused by unavoidable coupling with the environment, leads to degradation of quantum coherence(1). For a multipartite quantum system, decoherence leads to degradation of entanglement and, in certain cases, entanglement sudden death(2,3). Tackling decoherence, thus, is a critical issue faced in quantum information, as entanglement is a vital resource for many quantum information applications including quantum computing(4), quantum cryptography(5), quantum teleportation(6-8) and quantum metrology(9). Here, we propose and demonstrate a scheme to protect entanglement from decoherence. Our entanglement protection scheme makes use of the quantum measurement itself for actively battling against decoherence and it can effectively circumvent even entanglement sudden death.
- Keywords
- FREE SUBSPACES; TELEPORTATION; STATE; DISTILLATION; PURIFICATION; CHANNELS
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/15948
- DOI
- 10.1038/NPHYS2178
- ISSN
- 1745-2473
- Article Type
- Article
- Citation
- NATURE PHYSICS, vol. 8, no. 2, page. 117 - 120, 2012-02
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.