Nanowire-based Quantum Dots: Towards Generation of Coherent Single Photons

Dan Dalacu
NRC

Abstract

High optical quality single photons play a vital role in many quantum technologies, most notably in quantum secured communications.  Semiconductor quantum dots are a promising route to generating such photons deterministically and using quantum dots grown via a strain-driven process, photons having near-optimal properties have been demonstrated. A less developed quantum dot system based on semiconductor nanowires [1] offers controlled nucleation of single dot structures at predetermined positions on the growth substrate. In this presentation, progress on improving the optical quality of the photons generated by nanowire quantum dots is discussed.

[1] P. Laferrière, E. Yeung, I. Miron, D. B. Northeast, S. Haffouz, J. Lapointe, M. Korkusinski, P. J. Poole, R. L. Williams, D. Dalacu, “Unity yield of deterministically positioned quantum dot single photon sources”, arXiv:2110.08366 (2021).