ar X iv : q ua nt - p h / 03 10 01 2 v 1 2 O ct 2 00 3 Slow Light in Doppler Broadened Two level Systems
نویسنده
چکیده
We show that the propagation of light in a Doppler broadened medium can be slowed down considerably eventhough such medium exhibits very flat dispersion. The slowing down is achieved by the application of a saturating counter propagating beam that produces a hole in the inhomogeneous line shape. In atomic vapors, we calculate group indices of the order of 10. The calculations include all coherence effects.
منابع مشابه
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متن کاملar X iv : q ua nt - p h / 03 10 05 9 v 3 3 0 O ct 2 00 3 Dispersion Relations and Relativistic Causality
In this paper we show that if the refractive index, or rather, [n(ω) − 1] satisfies the dispersion relations then, it is implied by Titchmarsh's theorem that, n(ω) → 1 as ω → ∞. Any other limiting value for n(ω) would violate relativistic causality, by which we mean not only that cause must precede effect but also that signals cannot travel faster–than–c, the velocity of light in a vacuum.
متن کاملar X iv : q ua nt - p h / 03 10 05 9 v 1 9 O ct 2 00 3 Dispersion Relations and Relativistic Causality
In this paper we show that if the refractive index, or rather, [n(ω) − 1] satisfies the dispersion relations then, it is implied by Titchmarsh's theorem that, n(ω) → 1 as ω → ∞. Any other limiting value for n(ω) would violate relativistic causality, by which we mean not only that cause must precede effect but also that signals cannot travel faster–than–c, the velocity of light in a vacuum.
متن کاملar X iv : q ua nt - p h / 07 01 03 2 v 2 3 1 Ju l 2 00 7 SLOCC invariant and semi - invariants for SLOCC classification of four - qubits 1
X iv :q ua nt -p h/ 07 01 03 2v 2 3 1 Ju l 2 00 7 SLOCC invariant and semi-invariants for SLOCC classification of four-qubits 1 Dafa Li, Xiangrong Li, Hongtao Huang, Xinxin Li a Dept of mathematical sciences, Tsinghua University, Beijing 100084 CHINA b Department of Mathematics, University of California, Irvine, CA 92697-3875, USA c Electrical Engineering and Computer Science Department Univers...
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