Single photon emission in the telecom C-band from nanowire-based quantum dots
Andrew N. Wakileh, Lingxi Yu, Doğa Dokuz, S. Haffouz, Xiaohua Wu, J. Lapointe, David B. Northeast, Robin L. Williams, Nir Rotenberg, Philip J. Poole, Dan Dalacu
Abstract
Single photon sources operating on-demand at telecom wavelengths are required in fiber-based quantum secure communication technologies. In this work, we demonstrate single photon emission from position-controlled nanowire quantum dots emitting at λ>1530 nm. Emission in the C-band is achieved by composition engineering of an InAsxP1−x dot-in-a-rod structure. Using above-band pulsed excitation, we obtain single photon purities of g(2)(0)=0.062. These results represent an important step toward the scalable manufacture of high efficiency, high rate single photon emitters in the telecom C-band.