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M. S. Bigelow, N. N. Lepeshkin and R. W. Boyd, “Observation of Ultraslow Light in a Ruby Crystal at Room Temperature,” Physical Review Letters, Vol. 90, No. 11, 2003, p. 113903.

has been cited by the following article:

• TITLE: Observation of Superluminal in Doppler Broadened Two-Level Atomic Systems in Magnetic Field

  AUTHORS: Shuangqiang Liu, Yundong Zhang, Hao Wu, Ping Yuan

  KEYWORDS: Multiphoton Processes, Atom Optics, Hyperfine Structure, Zeeman Effect

  JOURNAL NAME: Journal of Modern Physics, Vol.1 No.4, December 6, 2010

  ABSTRACT: A novel method to control the group velocity of light propagation in a two-level atomic system without additional optical field is proposed. Numerical result and experimental data shows that by changing the magnetic field intensity and vapor temperature, the group velocity of probe light can be controlled in an appropriate region.