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Phys. Rev. A 65, 033829 (2002) [7 pages]

Three-mode squeezed vacuum state in Fock space as an entangled state

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Hongyi Fan1,2 and Guichuan Yu2
1CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, China
2Department of Material Science and Engineering, University of Science and Technology of China Hefei, Anhui, 230026, China

Received 20 August 2001; published 28 February 2002

We show that the operator U=exp[-ir(Q1P2+Q2P3+Q3P1)] is a three-mode squeezing operator for the three-mode quadratures exhibiting the standard squeezing, the corresponding squeezed vacuum state in three-mode Fock space is derived by virtue of the technique of integration within ordered product of operators. The entanglement involved in such a state is explained. The optical network for producing the three-mode squeezed state is proposed.


©2002 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevA.65.033829
DOI: 10.1103/PhysRevA.65.033829
PACS: 42.50.Dv

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