Coherent population trapping in open systems: A coupled/noncoupled-state analysis

Renzoni, Ferruccio; Lindner, Albrecht; Arimondo, E.

doi:10.1103/physreva.60.450

Cited by 47 publications

(39 citation statements)

References 9 publications

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“…The transition is considered closed in the sense that the radiative decay from the excited state returns the atom to the ground level (η = 1 in the model). However, the transition actually behaves as an open transition due to the existence of a trapping state in the ground level [39]. Numerical simulations with more realistic choices of the atomic level angular momenta and branching ratio are straightforward and give results qualitatively similar to those presented here.…”

Section: Theorysupporting

confidence: 69%

Noise spectroscopy of nonlinear magneto-optical resonances in Rb vapor

Martinelli

Valente²,

Failache³

et al. 2004

Phys. Rev. A

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Nonlinear magneto-optical (NMO) resonances occurring for near-zero magnetic field are studied in Rb vapor using light-noise spectroscopy. With a balanced detection polarimeter, we observe high contrast variations of the noise power (at fixed analysis frequency) carried by diode laser light resonant with the 5S 1/2 (F = 2) → 5P 1/2 (F = 1) transition of 87 Rb and transmitted through a rubidium vapor cell, as a function of magnetic field B. A symmetric resonance doublet of anticorrelated noise is observed for orthogonal polarizations around B = 0 as a manifestation of ground state coherence. We also observe sideband noise resonances when the magnetic field produces an atomic Larmor precession at a frequency corresponding to one half of the analysis frequency. The resonances on the light fluctuations are the consequence of phase to amplitude noise conversion owing to nonlinear coherence effects in the response of the atomic medium to the fluctuating field. A theoretical model (derived from linearized Bloch equations) is presented that reproduces the main qualitative features of the experimental signals under simple assumptions.

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Section: Theorysupporting

confidence: 69%

Noise spectroscopy of nonlinear magneto-optical resonances in Rb vapor

Martinelli

Valente²,

Failache³

et al. 2004

Phys. Rev. A

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“…Coherence in an atomic ground state attracted substantial attention in connection with lasing without inversion [3], magnetometry [4] and laser cooling [5]. As a result dark resonances recently are studied in detail, including open systems [6] and systems with losses [7]. In course of these studies a new and unexpected phenomenon was observed by authors of [8].…”

Section: Introductionmentioning

confidence: 99%

Reverse dark resonance in Rb excited by a diode laser

Alnis

Auzinsh

2001

J. Phys. B: At. Mol. Opt. Phys.

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“…The intensity of the transmitted light is monitored. Hanle/EIT/EIA resonances on the D1 lines of alkaline vapors were recently studied by several groups [8][9][10][11][12][13] (see inset in Fig. 4 for an energy level scheme of the 87 Rb D1 line).…”

Section: Introductionmentioning

confidence: 99%

Inhibition of electromagnetically induced absorption due to excited-state decoherence in Rb vapor

Failache¹,

Valente²,

Ban³

et al. 2003

Phys. Rev. A

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The explanation presented in [Taichenachev et al, Phys. Rev. A 61, 011802 (2000)] according to which the electromagnetically induced absorption (EIA) resonances observed in degenerate two level systems are due to coherence transfer from the excited to the ground state is experimentally tested in a Hanle type experiment observing the parametric resonance on the D1 line of 87 Rb. While EIA occurs in the F = 1 → F ′ = 2 transition in a cell containing only Rb vapor, collisions with a buffer gas (30 torr of N e) cause the sign reversal of this resonance as a consequence of collisional decoherence of the excited state. A theoretical model in good qualitative agreement with the experimental results is presented.

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Coherent population trapping in open systems: A coupled/noncoupled-state analysis

Cited by 47 publications

References 9 publications

Noise spectroscopy of nonlinear magneto-optical resonances in Rb vapor

Noise spectroscopy of nonlinear magneto-optical resonances in Rb vapor

Reverse dark resonance in Rb excited by a diode laser

Inhibition of electromagnetically induced absorption due to excited-state decoherence in Rb vapor

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