The continuous variable quadripartite entanglement properties of the output fields by the coupled intracavity parametric downconversions processes are analyzed theoretically. In the above-threshold region, it shows that the four output lights are multicolored entangled beams in separable locations with four-mode amplitude quadratures correlation and relative phase quadratures correlation.
© 2010 Optical Society of America
Original Manuscript: July 16, 2009
Revised Manuscript: January 13, 2010
Manuscript Accepted: January 16, 2010
Published: February 19, 2010
Juan Guo, Zehui Zhai, and Jiangrui Gao, "Bright quadripartite continuous variable entanglement from coupled intracavity nonlinearities," J. Opt. Soc. Am. B 27, 518-523 (2010)