Enhancement of steady-state squeezing in the resonance fluorescence of a coherently driven four-level atom of [Formula Presented] configuration via quantum interference

Fu li Li, Shao yan Gao, Shi Yao ZHU

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

We investigate steady-state squeezing in the phase quadratures of the resonance fluorescence emitted from a coherently driven four-level atom of [Formula Presented] configuration. Quantum fluctuation spectra of the optimum-phase quadratures are calculated. We show that if quantum interference between spontaneous emission channels from closed excited states to lower levels of the atom takes place, squeezing in the optimum-phase quadrature can occur in a very wider region of the parameter space than that predicted by previous studies. We also show that the quantum interference can greatly change the atomic coherences and then lead to this interesting result.

Original languageEnglish
Pages (from-to)10
Number of pages1
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume67
Issue number6
DOIs
Publication statusPublished - 2003

Scopus Subject Areas

  • Atomic and Molecular Physics, and Optics

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