Squeezing in a {lambda}-type three-level atom via spontaneously generated coherence
- Facultad de Ciencias Fisicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040 (Spain)
- Escuela Universitaria de Optica, Universidad Complutense de Madrid, C/ Arcos de Jalon s/n, 28037 Madrid (Spain)
The squeezing spectrum of the fluorescent light is investigated for a laser-driven three-level atom of the {lambda} configuration when quantum interference of the decay channels is accounted for. We show that when the two atomic transitions contribute to the detected fluorescence field, squeezing at certain frequency intervals is obtained in both the weak- and the high-Rabi-frequency regimes even for equally decay rates of the transitions. Unlike in two-level atoms in free space, squeezing can be obtained in both the in-phase and out-of-phase quadrature spectra although in different spectral regions. We also show that the squeezing spectrum can be controlled by an adequate selection of the Rabi frequencies and atomic detunings. Another remarkable effect is that squeezing can be achieved with proper relative phases of the driving fields. We provide an analytical description in the dressed basis which accounts for the main features of the squeezing spectra obtained from the numerical work.
- OSTI ID:
- 20718617
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 3 Vol. 72; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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