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arXiv:quant-ph/0511210

Bragg solitons in an electromagnetically induced transparency medium

Wei Jiang, Qun-feng Chen, Yong-Sheng Zhang, Guo, G. -C.

Published Nov 22, 2005• 0 citations
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Abstract

In this Letter we discuss the possibility of producing Bragg solitons in an electromagnetically induced transparency medium. We show that this coherent medium can be engineered to be a Bragg grating with a large Kerr nonlinearity through proper arrangements of light fields. Unlike in previous studies, the parameters of the medium can be easily controlled through adjusting the intensities and detunings of lasers. Thus this scheme may provide an opportunity to study the dynamics of Bragg solitons. And doing experiments with low power lights is possible.

DOI
10.48550/arxiv.quant-ph/0511210

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An optical four-level atomic discrete system through optical induction is proposed. A theoretical scheme to produce nonclassical lattice solitons (NLS) in the system is presented with the use of the effects of enhanced self-phase modulation and the giant kerr effect in the electromagnetically induced transparency. The power density and the photon flux can be tuned to a very low level by the controlling field and the soliton can propagate with very slow group velocity. By changing the sign of the detuning Δ1Δ_{1}Δ1​, both in-phase and πππ out-of-phase NLSs can be produced in this system.