Superluminal light propagation assisted by Zeeman coherence

Huijuan He; Zhengfeng Hu; Yuzhu Wang; Ligang Wang; Shiyao Zhu

doi:10.1364/OL.31.002486

Superluminal light propagation assisted by Zeeman coherence

Huijuan He
, Zhengfeng Hu
, Yuzhu Wang
, Ligang Wang
, Shiyao Zhu

Department of Physics

Research output: Contribution to journal › Journal article › peer-review

6 Citations (Scopus)

Abstract

We have observed a dispersionlike absorption (or gain) spectrum at the D1 transition in a Rb vapor cell filled with a buffer gas, due to Zeeman coherence of the ground states in a double A configuration. Meanwhile, we have also observed superluminal pulse propagation. It is experimentally demonstrated that the front speed of a light pulse still equals the light speed c in vacuum, although the group velocity of the light pulse is (-2.2±0.6)×10⁴ m/s.

Original language	English
Pages (from-to)	2486-2488
Number of pages	3
Journal	Optics Letters
Volume	31
Issue number	16
DOIs	https://doi.org/10.1364/OL.31.002486
Publication status	Published - 15 Aug 2006

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10.1364/OL.31.002486

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title = "Superluminal light propagation assisted by Zeeman coherence",

abstract = "We have observed a dispersionlike absorption (or gain) spectrum at the D1 transition in a Rb vapor cell filled with a buffer gas, due to Zeeman coherence of the ground states in a double A configuration. Meanwhile, we have also observed superluminal pulse propagation. It is experimentally demonstrated that the front speed of a light pulse still equals the light speed c in vacuum, although the group velocity of the light pulse is (-2.2±0.6)×104 m/s.",

author = "Huijuan He and Zhengfeng Hu and Yuzhu Wang and Ligang Wang and Shiyao Zhu",

year = "2006",

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journal = "Optics Letters",

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T1 - Superluminal light propagation assisted by Zeeman coherence

AU - He, Huijuan

AU - Hu, Zhengfeng

AU - Wang, Yuzhu

AU - Wang, Ligang

AU - Zhu, Shiyao

PY - 2006/8/15

Y1 - 2006/8/15

N2 - We have observed a dispersionlike absorption (or gain) spectrum at the D1 transition in a Rb vapor cell filled with a buffer gas, due to Zeeman coherence of the ground states in a double A configuration. Meanwhile, we have also observed superluminal pulse propagation. It is experimentally demonstrated that the front speed of a light pulse still equals the light speed c in vacuum, although the group velocity of the light pulse is (-2.2±0.6)×104 m/s.

AB - We have observed a dispersionlike absorption (or gain) spectrum at the D1 transition in a Rb vapor cell filled with a buffer gas, due to Zeeman coherence of the ground states in a double A configuration. Meanwhile, we have also observed superluminal pulse propagation. It is experimentally demonstrated that the front speed of a light pulse still equals the light speed c in vacuum, although the group velocity of the light pulse is (-2.2±0.6)×104 m/s.

UR - https://www.scopus.com/pages/publications/33749460206

U2 - 10.1364/OL.31.002486

DO - 10.1364/OL.31.002486

M3 - Journal article

AN - SCOPUS:33749460206

SN - 0146-9592

VL - 31

SP - 2486

EP - 2488

JO - Optics Letters

JF - Optics Letters

IS - 16

ER -

Superluminal light propagation assisted by Zeeman coherence

Abstract

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