Abstract

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.

© 2012 Optical Society of America

High-order sideband optical properties of a DNA–quantum dot hybrid system [Invited]

Yang Li and Kadi Zhu
Photon. Res. 1(1) 16-21 (2013)

Steady-state absorption–dispersion properties and four-wave mixing process in a quantum dot nanostructure

Xiangying Hao, Jing Wu, and Ying Wang
J. Opt. Soc. Am. B 29(3) 420-428 (2012)

An efficient optical knob from slow light to fast light in a coupled nanomechanical resonator-quantum dot system

Jin-Jin Li and Ka-Di Zhu
Opt. Express 17(22) 19874-19881 (2009)

Tunable slow and fast light device based on a carbon nanotube resonator

Jin-Jin Li and Ka-Di Zhu
Opt. Express 20(6) 5840-5848 (2012)

A tunable optical response of a hybrid semiconductor quantum dot-metal nanoparticle complex in the presence of optical excitations

Yong He, Jin-Jin Li, and Ka-Di Zhu
J. Opt. Soc. Am. B 29(5) 997-1002 (2012)