Control of spontaneous emission from a coherently driven four-level atom

Journal Article · Mon Aug 15 00:00:00 EDT 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.72.023802· OSTI ID:20718201

Jinhui, Wu; Aijun, Li; Yue, Ding; Yanchun, Zhao; Jinyue, Gao ^[1]

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1. College of Physics, Jilin University, Changchun 130023 (China)

We study the spontaneous-emission properties of a coherently driven four-level atom, and show a few interesting phenomena such as fluorescence quenching, spectral-line narrowing, spectral-line enhancement, and spectral-line elimination. These phenomena can be observed in experiment since the rigorous condition of near-degenerate levels with nonorthogonal dipole moments is not required here. Qualitatively, these phenomena can be attributed to the quantum interference between competitive spontaneous-decay channels in the bare-state picture or the spontaneously generated coherence between two close-lying levels in the dressed-state picture.

• OSTI ID: 20718201
• Journal Information: Physical Review. A, Vol. 72, Issue 2; Other Information: DOI: 10.1103/PhysRevA.72.023802; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
CONTROL
DECAY
DIPOLE MOMENTS
FLUORESCENCE
INTERFERENCE
LINE NARROWING
OPTICS
QUENCHING