Quantum dot resonant tunneling diode for telecommunication wavelength single photon detection
Hongwei Li, Beata E. Kardynal, Patrick See, Andrew J. Shields, Paul J. Simmonds, Harvey E. Beere, D. A. Ritchie · Applied Physics Letters · 2007
The authors present a quantum dot (QD) based single photon detector operating at a fiber optic telecommunication wavelength. The detector is based on an AlAs∕In0.53Ga0.47As∕AlAs double-barrier resonant tunneling diode containing a layer of self-assembled InAs QDs grown on an InP substrate. The device shows an internal efficiency of about 6.3% with a dark count rate of 1.58×10−6ns−1 for 1310nm photons.