Phase-independent spectrum of atomic resonance fluorescence from a driven three-level atom in ladder configuration

Shao Yan Gao; Fu Li Li; Shi Yao Zhu

doi:10.1016/j.physleta.2004.12.010

Phase-independent spectrum of atomic resonance fluorescence from a driven three-level atom in ladder configuration

Shao Yan Gao^*, Fu Li Li, Shi Yao Zhu

^*Corresponding author for this work

Department of Physics

Research output: Contribution to journal › Journal article › peer-review

4 Citations (Scopus)

Abstract

We investigate the phase-dependent squeezing of resonance fluorescence emitted from a coherently excited three-level atom with a ladder configuration of energy levels. Quantum fluctuation spectra of the optimum-phase quadratures and atomic populations and coherences are calculated. We find that two-photon absorption greatly modifies the steady-state atomic populations and coherence which can lead to squeezing of the total field of fluorescent light, but is not favourable for frequency-dependent squeezing spectra. Optimized squeezing can be attained and controlled with the phase of quadrature of fluorescent light, intensity and detuning of the driving fields and the decay rate of the controlling transition. Analytical picture is provided in dressed states representation for supporting our numerical results in the strong driving field limit.

Original language	English
Pages (from-to)	110-120
Number of pages	11
Journal	Physics Letters A
Volume	335
Issue number	2-3
DOIs	https://doi.org/10.1016/j.physleta.2004.12.010
Publication status	Published - 7 Feb 2005

Scopus Subject Areas

General Physics and Astronomy

User-Defined Keywords

Atomic coherence
Phase-independent spectrum
Squeezing
Two-photon absorption

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10.1016/j.physleta.2004.12.010

Cite this

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title = "Phase-independent spectrum of atomic resonance fluorescence from a driven three-level atom in ladder configuration",

abstract = "We investigate the phase-dependent squeezing of resonance fluorescence emitted from a coherently excited three-level atom with a ladder configuration of energy levels. Quantum fluctuation spectra of the optimum-phase quadratures and atomic populations and coherences are calculated. We find that two-photon absorption greatly modifies the steady-state atomic populations and coherence which can lead to squeezing of the total field of fluorescent light, but is not favourable for frequency-dependent squeezing spectra. Optimized squeezing can be attained and controlled with the phase of quadrature of fluorescent light, intensity and detuning of the driving fields and the decay rate of the controlling transition. Analytical picture is provided in dressed states representation for supporting our numerical results in the strong driving field limit.",

keywords = "Atomic coherence, Phase-independent spectrum, Squeezing, Two-photon absorption",

author = "Gao, {Shao Yan} and Li, {Fu Li} and Zhu, {Shi Yao}",

note = "Funding Information: This research was supported from the National Science Foundation of China under Grant No. 10274058, and the Doctoral Foundation of Xian Jiaotong University.",

year = "2005",

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doi = "10.1016/j.physleta.2004.12.010",

language = "English",

volume = "335",

pages = "110--120",

journal = "Physics Letters A",

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number = "2-3",

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TY - JOUR

T1 - Phase-independent spectrum of atomic resonance fluorescence from a driven three-level atom in ladder configuration

AU - Gao, Shao Yan

AU - Li, Fu Li

AU - Zhu, Shi Yao

N1 - Funding Information: This research was supported from the National Science Foundation of China under Grant No. 10274058, and the Doctoral Foundation of Xian Jiaotong University.

PY - 2005/2/7

Y1 - 2005/2/7

N2 - We investigate the phase-dependent squeezing of resonance fluorescence emitted from a coherently excited three-level atom with a ladder configuration of energy levels. Quantum fluctuation spectra of the optimum-phase quadratures and atomic populations and coherences are calculated. We find that two-photon absorption greatly modifies the steady-state atomic populations and coherence which can lead to squeezing of the total field of fluorescent light, but is not favourable for frequency-dependent squeezing spectra. Optimized squeezing can be attained and controlled with the phase of quadrature of fluorescent light, intensity and detuning of the driving fields and the decay rate of the controlling transition. Analytical picture is provided in dressed states representation for supporting our numerical results in the strong driving field limit.

AB - We investigate the phase-dependent squeezing of resonance fluorescence emitted from a coherently excited three-level atom with a ladder configuration of energy levels. Quantum fluctuation spectra of the optimum-phase quadratures and atomic populations and coherences are calculated. We find that two-photon absorption greatly modifies the steady-state atomic populations and coherence which can lead to squeezing of the total field of fluorescent light, but is not favourable for frequency-dependent squeezing spectra. Optimized squeezing can be attained and controlled with the phase of quadrature of fluorescent light, intensity and detuning of the driving fields and the decay rate of the controlling transition. Analytical picture is provided in dressed states representation for supporting our numerical results in the strong driving field limit.

KW - Atomic coherence

KW - Phase-independent spectrum

KW - Squeezing

KW - Two-photon absorption

UR - http://www.scopus.com/inward/record.url?scp=12544257526&partnerID=8YFLogxK

U2 - 10.1016/j.physleta.2004.12.010

DO - 10.1016/j.physleta.2004.12.010

M3 - Journal article

AN - SCOPUS:12544257526

SN - 0375-9601

VL - 335

SP - 110

EP - 120

JO - Physics Letters A

JF - Physics Letters A

IS - 2-3

ER -

Phase-independent spectrum of atomic resonance fluorescence from a driven three-level atom in ladder configuration

Abstract

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