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APS » Journals » Phys. Rev. A » Volume 58 » Issue 4
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Phys. Rev. A 58, R2623–R2626 (1998)

Embedded Bell-state analysis

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Paul G. Kwiat
Physics Division, P-23, MS-H803, Los Alamos National Laboratory, Los Alamos, New Mexico 87545

Harald Weinfurter
Institut für Experimentalphysik, Technikerstrasse 25, Universität Innsbruck, 6020 Innsbruck, Austria

Received 19 June 1998; published in the issue dated October 1998

We discuss a method for distinguishing the four orthogonal Bell states of two entangled particles. Because the scheme relies only on linear optical elements, it should be realizable with current technology. The new feature is that the Bell states must be embedded in a larger Hilbert space. That is, the correlated particles must be entangled in more than one degree of freedom.

© 1998 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.58.R2623
DOI:
10.1103/PhysRevA.58.R2623
PACS:
03.67.-a, 03.67.Hk, 42.50.Dv
 
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