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A fiber-integrated nanobeam single photon source emitting at telecom wavelengths

TitleA fiber-integrated nanobeam single photon source emitting at telecom wavelengths
Publication TypeJournal Article
Year of Publication2019
AuthorsC-M. Lee, M. Atabey Buyukkaya, S. Aghaeimeibodi, A. Karasahin, C. J. K. Richardson, and E. Waks
JournalAppl. Phys. Lett.
Date PublishedAPR 29
Type of ArticleArticle

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.