Discord as a quantum resource for bi-partite communication

Chrzanowski, Helen M., Gu, Mile, Assad, Syed M., Symul, Thomas, Modi, Kevan, Ralph, Timothy C., Vedral, Vlatko and Lam, Ping Koy (2014). Discord as a quantum resource for bi-partite communication. In: Quantum Communication, Measurement and Computing (QCMC): Eleventh International Conference. 11th International Conference on Quantum Communication, Measurement and Computation, QCMC 2012, Vienna, Austria, (116-118). 30 July- 3 August 2012. doi:10.1063/1.4903110


Author Chrzanowski, Helen M.
Gu, Mile
Assad, Syed M.
Symul, Thomas
Modi, Kevan
Ralph, Timothy C.
Vedral, Vlatko
Lam, Ping Koy
Title of paper Discord as a quantum resource for bi-partite communication
Conference name 11th International Conference on Quantum Communication, Measurement and Computation, QCMC 2012
Conference location Vienna, Austria
Conference dates 30 July- 3 August 2012
Convener Jörg Schmiedmayer
Proceedings title Quantum Communication, Measurement and Computing (QCMC): Eleventh International Conference   Check publisher's open access policy
Journal name AIP Conference Proceedings   Check publisher's open access policy
Place of Publication College Park, MD United States
Publisher American Institute of Physics
Publication Year 2014
Year available 2014
Sub-type Fully published paper
DOI 10.1063/1.4903110
ISBN 9780735412729
ISSN 0094-243X
1551-7616
Volume 1633
Start page 116
End page 118
Total pages 3
Collection year 2015
Language eng
Formatted Abstract/Summary
Coherent interactions that generate negligible entanglement can still exhibit unique quantum behaviour. This observation has motivated a search beyond entanglement for a complete description of all quantum correlations. Quantum discord is a promising candidate. Here, we experimentally demonstrate that under certain measurement constraints, discord between bipartite systems can be consumed to encode information that can only be accessed by coherent quantum interactions. The inability to access this information by any other means allows us to use discord to directly quantify this ‘quantum advantage’.
Keyword Discord
Quantum correlations
Quantum information
Q-Index Code EX
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Conference Paper
Collections: Centre for Quantum Computer Technology Publications
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