Photon storage with subnanosecond readout rise time in coupled quantum wells
نویسندگان
چکیده
Photon storage with 250 ps rise time of the readout optical signal was implemented with indirect excitons in coupled quantum well !CQW" nanostructures. The storage and release of photons was controlled by the gate voltage pulse. The transient processes in the CQW were studied by measuring the kinetics of the exciton emission spectra after application of the gate voltage pulse. Strong oscillations of the exciton emission wavelength were observed in the transient regime when the gate voltage pulse was carried over an ordinary wire. Gating the CQW via an impedance-matched broadband transmission line has lead to an effective elimination of these transient oscillations and expedient switching of the exciton energy to a required value within a short time, much shorter than the exciton lifetime. © 2008 American Institute of Physics. #DOI: 10.1063/1.2978214$
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