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Spin-Mechanical Coupling of an InAs Quantum Dot Embedded in a Mechanical Resonator

TitleSpin-Mechanical Coupling of an InAs Quantum Dot Embedded in a Mechanical Resonator
Publication TypeJournal Article
Year of Publication2018
AuthorsS.. G. Carter, A.. S. Bracker, G.. W. Bryant, M.. Kim, C.. S. Kim, M.. K. Zalalutdinov, M.. K. Yakes, C.. Czarnocki, J.. Casara, M.. Scheibner, and D.. Gammon
JournalPHYSICAL REVIEW LETTERS
Volume121
Pagination246801
Date PublishedDEC 14
ISSN0031-9007
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 of holes compared to electrons.

DOI10.1103/PhysRevLett.121.246801