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Issue Eur. Phys. J. D
Volume 39, Number 1, July 2006
Page(s) 107 - 113
Section Quantum Optics and Quantum Information
DOI 10.1140/epjd/e2006-00071-9
Published online 04 April 2006

Eur. Phys. J. D 39, 107-113 (2006)
DOI: 10.1140/epjd/e2006-00071-9

Continuum variable entangled state generated by an asymmetric beam splitter

H.-Y. Fan1, 2, 3 and Y.-L. Yang2

1  CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, P.R. China
2  Department of Material Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P.R. China
3  Department of Physics, Shanghai Jiao Tong University, Shanghai 200030, P.R. China

yyli@mail.ustc.edu.cn

(Received 17 November 2005 / Received in final form 16 December 2005 / Published online 4 April 2006)

Abstract
For an asymmetric beam-splitter a new kind of entangled state $\left\vert \eta ,\theta \right\rangle $ is introduced, we then derive the integration measure with which such states can make up a complete and orthonormal representation in two-mode Fock space. We then show how to use $\left\vert \eta ,\theta \right\rangle $ in finding new squeezing operator and new squeezed state, whose generation can relies on the asymmetric beamsplitter.

PACS
03.67.-a - Quantum information.
42.50.Dv - Nonclassical states of the electromagnetic field, including entangled photon states; quantum state engineering and measurements.

© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2006


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