Squeezing in a Lambda-type three-level atom via spontaneously generated coherence

dc.contributor.authorGonzalo Fonrodona, Isabel
dc.contributor.authorAntón Revilla, Miguel Ángel
dc.contributor.authorCarreño Sánchez, Fernando
dc.contributor.authorGómez Calderón, Óscar
dc.description© 2005 The American Physical Society. We are gratefully to Tomás Lorca L. Aranguren for a careful reading of the manuscript. This work was supported by the Projects No. PR3/04-12458 (UCM, Spain) and No. FIS2004-03267 (MEC, Spain).
dc.description.abstractThe 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.
dc.description.departmentDepto. de Óptica
dc.description.facultyFac. de Ciencias Físicas
dc.description.sponsorshipUniversidad Complutense de Madrid (UCM)
dc.description.sponsorshipMinisterio de Educación y Ciencia (MEC), España
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dc.journal.titlePhysical review A
dc.publisherAmerican Physical Society
dc.rights.accessRightsopen access
dc.subject.keywordElectromagnetically induced transparency
dc.subject.keywordSpontaneous emission cancellation
dc.subject.keywordResonance fluorescence
dc.subject.keywordQuantum interference
dc.subject.ucmÓptica (Física)
dc.subject.unesco2209.19 Óptica Física
dc.titleSqueezing in a Lambda-type three-level atom via spontaneously generated coherence
dc.typejournal article
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