https://doi.org/10.1140/epjd/e2013-40365-1
Regular Article
From slow to fast light in amplified negative refraction using atomic coherence assisted by an incoherent pump
1
State Key Lab of Superhard Materials, College of Physics, Jilin
University, Changchun
130012, P.R.
China
2
Key Lab of Coherent Light, Atomic and Molecular Spectroscopy,
Ministry of Education, College of Physics, Jilin University,
Changchun
130012, P.R.
China
a
e-mail: suxm@jlu.edu.cn
Received: 18 June 2013
Received in final form: 21 July 2013
Published online: 4 February 2014
We propose and demonstrate a scheme to realize large negative refraction dispersion when a probe field is amplified by cooperation between a coherent field and an incoherent pump. The probe pulse can propagate either subluminally or superluminally in the left-handed amplification medium by modulating parameters of the coherent and incoherent fields.
Key words: Quantum Optics
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag 2014
