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APS » Journals » Phys. Rev. A » Volume 80 » Issue 5
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Phys. Rev. A 80, 050301(R) (2009) [4 pages]

Long-distance entanglement and quantum teleportation in coupled-cavity arrays

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Salvatore M. Giampaolo1,2 and Fabrizio Illuminati1,2,3,*
1Dipartimento di Matematica e Informatica, Università degli Studi di Salerno, Via Ponte don Melillo, Fisciano, I-84084 Salerno, Italy
2CNR-INFM Coherentia, and INFN Sezione di Napoli, Gruppo Collegato di Salerno, Fisciano, I-84084 Salerno, Italy
3ISI Foundation for Scientific Interchange, Viale Settimio Severo 65, 00173 Torino, Italy

Received 11 July 2009; published 6 November 2009

We introduce quantum spin models whose ground states allow for sizable entanglement between distant spins. We discuss how spin models with global end-to-end entanglement realize quantum teleportation channels with optimal compromise between scalability and resilience to thermal decoherence and can be implemented straightforwardly in suitably engineered arrays of coupled optical cavities.

© 2009 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.80.050301
DOI:
10.1103/PhysRevA.80.050301
PACS:
03.67.Hk, 03.65.Ca, 73.43.Nq, 75.10.Jm

*Corresponding author; illuminati@sa.infn.it

 
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