[16p-M_107-1~10] 13.6 Nanostructures, quantum phenomena, and nano quantum devices

4:15 PM - 4:30 PM JST(7:15 AM - 7:30 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[16p-M_107-7] Electrical readout of the coherent coupling between electrons and LO phonons in charge sensitive infrared phototransistor (Ⅱ)

〇Takaki Fukumoto¹, Souichi Nakai¹, Syogo Kaneko¹, Hiroaki Yasuda², Norihiko Sekine², Iwao Hosako², Susumu Komiyama^2,3, Kenji Ikushima¹ (1.Tokyo Univ. of A & T, 2.NICT, 3.Univ. of Tokyo)

Keywords:

quantum well,coherent coupling,quantum device

In GaAs/AlGaAs quantum wells, electrons coherently couple to LO phonons via intersubband transitions (resonant polarons). A charge-sensitive infrared phototransistor (CSIP) is a quantum device based on a GaAs/AlGaAs double-quantum-well structure that enables electrical readout of resonant polarons. In this presentation, we evaluate the sensitivity of a CSIP in which the intersubband energy is tuned to match the LO-phonon energy, and we report the photoresponse spectra.