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Strain-mediated coupling in a quantum dot-mechanical oscillator hybrid system

Authors

I. Yeo

P-L. de Assis

A. Gloppe

E. Dupont-Ferrier

P. Verlot

N. S. Malik

E. Dupuy

J. Claudon

J-M.

A.

G. Nogues

S. Seidelin

J-Ph. Poizat

O. Arcizet

M. Richard



Contributors

Pierre Verlot
Researcher

Abstract

Recent progress in nanotechnology has allowed the fabrication of new hybrid systems in which a single two-level system is coupled to a mechanical nanoresonator. In such systems the quantum nature of a macroscopic degree of freedom can be revealed and manipulated. This opens up appealing perspectives for quantum information technologies, and for the exploration of the quantum-classical boundary. Here we present the experimental realization of a monolithic solid-state hybrid system governed by material strain: a quantum dot is embedded within a nanowire that features discrete mechanical resonances corresponding to flexural vibration modes. Mechanical vibrations result in a time-varying strain field that modulates the quantum dot transition energy. This approach simultaneously offers a large light-extraction efficiency and a large exciton-phonon coupling strength g0. By means of optical and mechanical spectroscopy, we find that g0/2π is nearly as large as the mechanical frequency, a criterion that defines the ultrastrong coupling regime. © 2014 Macmillan Publishers Limited. All rights reserved.

Citation

Yeo, I., de Assis, P., Gloppe, A., Dupont-Ferrier, E., Verlot, P., Malik, N. S., …Richard, M. (2014). Strain-mediated coupling in a quantum dot-mechanical oscillator hybrid system. Nature Nanotechnology, 9(2), 106-110. https://doi.org/10.1038/nnano.2013.274

Journal Article Type Article
Acceptance Date Nov 14, 2013
Online Publication Date Dec 22, 2013
Publication Date Feb 1, 2014
Deposit Date Dec 10, 2018
Journal Nature Nanotechnology
Print ISSN 1748-3387
Electronic ISSN 1748-3395
Publisher Nature Publishing Group
Peer Reviewed Peer Reviewed
Volume 9
Issue 2
Pages 106-110
DOI https://doi.org/10.1038/nnano.2013.274
Public URL https://nottingham-repository.worktribe.com/output/1396660
Publisher URL https://www.nature.com/articles/nnano.2013.274