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Phys. Rev. A 68, 042313 (2003) [5 pages]

Hyperentanglement-assisted Bell-state analysis

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S. P. Walborn *, S. Pádua, and C. H. Monken
Universidade Federal de Minas Gerais, Caixa Postal 702, Belo Horizonte, MG 30123-970, Brazil

Received 28 May 2003; published 14 October 2003

We propose a simple scheme for complete Bell-state measurement of photons using hyperentangled states—entangled in multiple degrees of freedom. In addition to hyperentanglement, our scheme requires only linear optics and single photon detectors, and is realizable with current technology. At the cost of additional classical communication, our Bell-state measurement can be implemented nonlocally. We discuss the possible application of these results to quantum dense coding and quantum teleportation.


©2003 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevA.68.042313
DOI: 10.1103/PhysRevA.68.042313
PACS: 03.67.Hk, 42.50.-p

* Email address: swalborn@fisica.ufmg.br

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