Spin-mechanical coupling of an InAs quantum dot embedded in a mechanical resonator

Published

December 14, 2018

Author(s)

S G. Carter, A S. Bracker, Garnett W. Bryant, M Kim, C S. Kim, M Zalalutdinov, M. K. Yakes, C Czarnocki, J Casara, M Scheibner, D Gammon

Abstract

We demonstrate strain-induced coupling between a hole spin in a quantum dot and mechanical motion of a cantilever. The optical transitions of quantum dots integrated into GaAs mechanical resonators are measured synchronously with the motion of the driven resonators. In a Voigt magnetic field, both electron and hole spin splittings are measured, showing negligible change for the electron spin but a large change for the hole spin of up to 36%. This large effect is attributed to the stronger spin orbit interaction and higher effective mass of holes compared to electrons.

Citation

Physical Review Letters

Volume

121

Issue

24

Pub Type

Journals

Download Paper

https://doi.org/10.1103/PhysRevLett.121.246801

Local Download

Keywords

spin, quantum dots, mechanical resonators, photoluminescence, g-factor

Citation

Carter, S. , Bracker, A. , Bryant, G. , Kim, M. , Kim, C. , Zalalutdinov, M. , Yakes, M. , Czarnocki, C. , Casara, J. , Scheibner, M. and Gammon, D. (2018), Spin-mechanical coupling of an InAs quantum dot embedded in a mechanical resonator, Physical Review Letters, [online], https://doi.org/10.1103/PhysRevLett.121.246801, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=926269 (Accessed October 10, 2025)