Experimental distribution of entanglement with separable carriers

Fedrizzi A., Zuppardo M., Gillett G.G., Broome M.A., Almeida M.P., Paternostro M., White A.G. and Paterek T. (2013) Experimental distribution of entanglement with separable carriers. Physical Review Letters, 111 23: 230504.1-230504.5. doi:10.1103/PhysRevLett.111.230504

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Author Fedrizzi A.
Zuppardo M.
Gillett G.G.
Broome M.A.
Almeida M.P.
Paternostro M.
White A.G.
Paterek T.
Title Experimental distribution of entanglement with separable carriers
Journal name Physical Review Letters   Check publisher's open access policy
ISSN 0031-9007
Publication date 2013-12-01
Year available 2013
Sub-type Article (original research)
DOI 10.1103/PhysRevLett.111.230504
Open Access Status File (Publisher version)
Volume 111
Issue 23
Start page 230504.1
End page 230504.5
Total pages 5
Place of publication College Park, United States
Publisher American Physical Society
Language eng
Formatted abstract
The key requirement for quantum networking is the distribution of entanglement between nodes. Surprisingly, entanglement can be generated across a network without direct transfer - or communication - of entanglement. In contrast to information gain, which cannot exceed the communicated information, the entanglement gain is bounded by the communicated quantum discord, a more general measure of quantum correlation that includes but is not limited to entanglement. Here, we experimentally entangle two communicating parties sharing three initially separable photonic qubits by exchange of a carrier photon that is unentangled with either party at all times. We show that distributing entanglement with separable carriers is resilient to noise and in some cases becomes the only way of distributing entanglement through noisy environments.
Keyword Physics, Multidisciplinary
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID 2012/05/E/ST2/02352
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
Official 2014 Collection
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 25 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 21 times in Scopus Article | Citations
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Created: Tue, 31 Dec 2013, 10:44:46 EST by System User on behalf of School of Mathematics & Physics