Journal article
Entanglement in pure and thermal cluster states
- Abstract:
- We present a closest separable state to cluster states, which in turn allows us to calculate the entanglement scaling using relative entropy of entanglement. We reproduce known results for pure cluster states and show how our method can be used in quantifying entanglement in noisy cluster states. Operational meaning is given to our method, which clearly demonstrates how these closest separable states can be constructed from two-qubit clusters in the case of pure states. We also discuss the issue of finding the critical temperature at which the cluster state becomes only classically correlated and the importance of this temperature to our method. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 719.6KB, Terms of use)
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- Publisher copy:
- 10.1088/1367-2630/12/5/053015
Authors
+ Engineering and Physical Sciences Research Council
More from this funder
- Funding agency for:
- Vedral, V
- Publisher:
- IOP Publishing
- Journal:
- New Journal of Physics More from this journal
- Volume:
- 12
- Issue:
- 5
- Article number:
- 053015
- Publication date:
- 2010-05-11
- DOI:
- EISSN:
-
1367-2630
- ISSN:
-
1367-2630
- Language:
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English
- UUID:
-
uuid:ee5aad96-f545-44c7-951d-72717acf6d71
- Local pid:
-
pubs:158915
- Source identifiers:
-
158915
- Deposit date:
-
2012-12-19
Terms of use
- Copyright holder:
- IOP Publishing Ltd and Deutsche Physikalische Gesellschaft
- Copyright date:
- 2010
- Notes:
- Copyright IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. Authors, their institutions and third parties all have the same rights to reuse articles published in New Journal of Physics in accordance with the Creative Commons Attribution 3.0 Unported (CC-BY) license. This allows the articles to be shared, adapted and made commercial use of subject to appropriate attribution.
- Licence:
- CC Attribution (CC BY)
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