SQUEEZING PROPERTIES OF MULTICOMPONENT SUPERPOSITION STATES OF LIGHT

Citation
Ks. Lee et al., SQUEEZING PROPERTIES OF MULTICOMPONENT SUPERPOSITION STATES OF LIGHT, Journal of the Korean Physical Society, 26(3), 1993, pp. 197-204
Citations number
35
Categorie Soggetti
Physics
ISSN journal
03744884
Volume
26
Issue
3
Year of publication
1993
Pages
197 - 204
Database
ISI
SICI code
0374-4884(1993)26:3<197:SPOMSS>2.0.ZU;2-W
Abstract
Interacting with a Kerr medium, an input coherent field evolves into a generalized coherent state. We show that at the interaction time lamb dat = pi/N, where lambda is the nonlinear coupling coefficient, the ge neralized coherent state is transformed into a superposition of N cohe rent component states. Using the Wigner-function phase-space formalism , we show that the noise reduction takes place along rotated quadratur e axes for the superposition states and for the generalized coherent s tates. The influence of a dissipative environment (vacuum reservoir) o n the squeezing properties of these multicomponent superposition state s is investigated. In the stationary limit, the noise is again reduced to the vacuum level. Deterioration of squeezing is related with the r apid decay of quantum coherences under the influence of the reservoir.