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APS » Journals » Phys. Rev. Lett. » Volume 99 » Issue 19
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Phys. Rev. Lett. 99, 193602 (2007) [4 pages]

Generation of Symmetric Dicke States of Remote Qubits with Linear Optics

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C. Thiel1,*, J. von Zanthier1, T. Bastin2, E. Solano3,4, and G. S. Agarwal5
1Institut für Optik, Information und Photonik, Max-Planck Forschungsgruppe, Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
2Institut de Physique Nucléaire, Atomique et de Spectroscopie, Université de Liège, 4000 Liège, Belgium
3Physics Department, ASC, and CeNS, Ludwig-Maximilians-Universität, Theresienstrasse 37, 80333 Munich, Germany
4Sección Física, Departamento de Ciencias, Pontificia Universidad Católica del Perú, Apartado Postal 1761, Lima, Peru
5Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078-3072, USA

Received 30 March 2007; published 7 November 2007

We propose a method for generating all symmetric Dicke states, either in the long-lived internal levels of N massive particles or in the polarization degrees of freedom of photonic qubits, using linear optical tools only. By means of a suitable multiphoton detection technique, erasing Welcher-Weg information, our proposed scheme allows the generation and measurement of an important class of entangled multiqubit states.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.99.193602
DOI:
10.1103/PhysRevLett.99.193602
PACS:
42.50.Dv, 03.67.Mn, 32.80.Pj

*Corresponding author.

cthiel@optik.uni-erlangen.de

http://www.optik.uni-erlangen.de/jvz/

 
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