Journal
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
Volume 29, Issue 12, Pages 3371-3376Publisher
OPTICAL SOC AMER
DOI: 10.1364/JOSAB.29.003371
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Funding
- National Natural Science Foundation of China [10974133, 11274230]
- Ministry of Education Program for Ph.D
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We theoretically investigate the slow- and fast-light phenomena caused by the coupling between peptide quantum dot (QD) and DNA molecules with the presence of strong pump light and weak signal light simultaneously. In this QD-DNA system, significant changes of the velocity of signal light can be observed when pump-exciton detuning and signal-exciton detuning are adjusted properly. Slow and fast signal light with little absorption can be obtained by adjusting the pump intensity when the pump field is off-resonant. It can be shown clearly that these phenomena cannot occur without the QD-DNA coupling. The scheme proposed here will lead people to know more about the optical behaviors of the QD-DNA system with the currently popular pump-probe technique. (c) 2012 Optical Society of America
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