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APS » Journals » Phys. Rev. Lett. » Volume 90 » Issue 25
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Phys. Rev. Lett. 90, 253601 (2003) [4 pages]

Efficient Engineering of Multiatom Entanglement through Single-Photon Detections

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L.-M. Duan1,2 and H. J. Kimble3
1Institute for Quantum Information, MC 107-81, California Institute of Technology, Pasadena, California 91125-8100, USA
2Laboratory of Quantum Information, USTC, Hefei 230026, China
3Norman Bridge Laboratory of Physics 12-33, California Institute of Technology, Pasadena, California 91125, USA

Received 29 January 2003; published 23 June 2003

We propose an efficient scheme to engineer multiatom entanglement by detecting cavity decay through single-photon detectors. In the special case of two atoms, this scheme is much more efficient than previous probabilistic schemes, and insensitive to randomness in the atom’s position. More generally, the scheme can be used to prepare arbitrary superpositions of multiatom Dicke states without the requirements of high-efficiency detection and separate addressing of different atoms.

© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.90.253601
DOI:
10.1103/PhysRevLett.90.253601
PACS:
42.50.Gy, 03.67.Mn
 
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