Abstract

Fiber-coupled single photon sources are considered important components of photonics-based quantum information processors. Most fibercoupled single photon sources require careful alignment between fibers and quantum emitters. In this work, we present an alignment-free fiber-integrated single photon source based on an InAs/InP quantum dot emitting at telecom wavelengths. We designed a nanobeam containing the quantum dots attached to a fiber taper. The adiabatic tapered coupler of the nanobeam enables efficient light coupling to the fiber taper. Using a tungsten probe in a focused ion beam system, we transferred the nanobeam to the fiber taper. The observed fiber-coupled single photon emission occurs with a brightness of 1.4% and a purity of 83%. This device provides a building block for fiber-optic quantum circuits that have various applications, such as quantum communication and distributed quantum computing. Published under license by AIP Publishing.

Publication Details
Publication Type
Journal Article
Year of Publication
2019
Volume
114
DOI
10.1063/1.5089907
Journal
Applied Physics Letters
Contributors