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Steep dispersion and group velocity belowc3000in coherent population trapping
Abstract
We have measured the index of refraction in the region of a coherent population trapping resonance in a cesium vapor cell with an interferometric technique. We find very high normal dispersion (up to $\frac{\mathrm{dn}}{\mathrm{df}}=9.7\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}12}$ ${\mathrm{Hz}}^{\ensuremath{-}1}$) at low absorption. From our spectra we obtain very small group velocities below $\frac{c}{3000}$. This corresponds to a delay time of more than 200 ns for a cesium cell 20 mm in length, equivalent to more than 60 m of propagation in vacuum.
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Citations
Cited by
Electromagnetically induced transparency: Optics in coherent media
Fleischhauer, M., Imamoglu, A., & Marangos, J. P. (2005) · Reviews of Modern Physics · doi:10.1103/revmodphys.77.633 · Cited by 5,189
Colloquium: Trapping and manipulating photon states in atomic ensembles
Lukin, M. D. (2003) · Reviews of Modern Physics · doi:10.1103/revmodphys.75.457 · Cited by 1,141
Controlling photons using electromagnetically induced transparency
Lukin, M. D., & Imamoğlu, A. (2001) · Nature · doi:10.1038/35095000 · Cited by 799
Metadata
- Authors
- Schmidt, O., Wynands, R., Hussein, Z., & Meschede, D.
- Venue
- Physical Review A
- Publisher
- American Physical Society (APS)
- Published
- 1996-01-01
- Volume
- 53
- Issue
- 1
- Pages
- R27-R30
- ISSN
- 0556-2791 (ISSN-L)
- 1050-2947
- 1094-1622
- OpenAlex
- W1976700004
- Cited by
- 195
- References
- 0
- FWCI
- 5.04
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Steep dispersion and group velocity belowc3000in coherent population trapping. https://app.cochat.ai/papers/10.1103/physreva.53.r27
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- Schmidt, O., Wynands, R., Hussein, Z., & Meschede, D. (1996). Steep dispersion and group velocity belowc3000in coherent population trapping. Physical Review A. https://doi.org/10.1103/physreva.53.r27
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