2016
DOI: 10.1103/physreva.94.043843
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Superluminal light propagation via quantum interference in decay channels

Abstract: We examine the propagation of a weak probe light through a coherently driven Y -type system. Under the condition that the excited atomic levels decay via same vacuum modes, the effects of quantum interference in decay channels are considered. It is found that the interference in decay channels results in a lossless anomalous dispersion between two gain peaks. We demonstrate that the probe pulse propagation can in principle be switched from subluminal to superluminal due to the decay-induced interference. We al… Show more

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Cited by 8 publications
(11 citation statements)
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“…1(b)], it is seen from Eqs. (19) that the fluorescence field of the π transitions will be polarized along e z and the light emitted from the σtransitions will be linearly polarized along e x . With this choice of the detection scheme, the fluorescence light from the π and σ-transitions can be differentiated by means of a polarization filter.…”
Section: Resonance Fluorescence Spectrummentioning
confidence: 99%
“…1(b)], it is seen from Eqs. (19) that the fluorescence field of the π transitions will be polarized along e z and the light emitted from the σtransitions will be linearly polarized along e x . With this choice of the detection scheme, the fluorescence light from the π and σ-transitions can be differentiated by means of a polarization filter.…”
Section: Resonance Fluorescence Spectrummentioning
confidence: 99%
“…to study the influence of the cross-correlation terms. The fluorescence spectrum (20) can then be written in compact form as…”
Section: The Resonance Fluorescence Spectrummentioning
confidence: 99%
“…The presence of this VIC leads to several fascinating phenomena in multi-level systems [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. For instance, in three-level atoms, effects such as quenching of spontaneous emission [3], dark lines in the fluorescence spectrum [4], ultranarrow resonances [5], large population inversion [6], * Author to whom any correspondence should be addressed.…”
Section: Introductionmentioning
confidence: 99%
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