Coupling an epitaxial quantum dot to a fiber-based external-mirror microcavity

Published

June 3, 2021

Author(s)

Andreas Muller, Edward B. Flagg, Michael Metcalfe, John R. Lawall, Glenn S. Solomon

Abstract

We report the coupling of individual InAs quantum dots (QDs) to a single mode of an external-mirror optical microcavity. The external mirror is bonded to a fiber and positioned above a semiconductor sample consisting of a QD-containing GaAs layer grown over a distributed Bragg reflector (DBR). Unlike fully-integrated temperature-tuned microcavities, this open cavity can be rapidly and precisely tuned without changing the QD frequency nor deteriorating its linewidth. With a mirror radius of curvature of 42 microns and a cavity length of 10 microns, the spot size at the concave mirror is closely matched to the single-mode fi ber, off ering high collection effciency directly into the fi ber. With an improved fi nesse (currently F=1000), this system may enter the strong coupling regime.

Citation

Applied Physics Letters

Pub Type

Journals

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Keywords

semiconductor quantum dots, cavity quantum electrodynamics, quantum optics

Citation

Muller, A. , Flagg, E. , Metcalfe, M. , Lawall, J. and Solomon, G. (2021), Coupling an epitaxial quantum dot to a fiber-based external-mirror microcavity, Applied Physics Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=903242 (Accessed April 18, 2024)