Spin-orbit-induced strong coupling of a single spin to a nanomechanical resonator
Abstract
We theoretically investigate the deflection-induced coupling of an electron spin to vibrational motion due to spin-orbit coupling in suspended carbon nanotube quantum dots. Our estimates indicate that, with current capabilities, a quantum dot with an odd number of electrons can serve as a realization of the Jaynes-Cummings model of quantum electrodynamics in the strong-coupling regime. A quantized flexural mode of the suspended tube plays the role of the optical mode and we identify two distinct two-level subspaces, at small and large magnetic field, which can be used as qubits in this setup. The strong intrinsic spin-mechanical coupling allows for detection, as well as manipulation of the spin qubit, and may yield enhanced performance of nanotubes in sensing applications.
Keywords
Cite
@article{arxiv.1110.4893,
title = {Spin-orbit-induced strong coupling of a single spin to a nanomechanical resonator},
author = {András Pályi and P. R. Struck and Mark Rudner and Karsten Flensberg and Guido Burkard},
journal= {arXiv preprint arXiv:1110.4893},
year = {2012}
}
Comments
5 pages, 3 figures + appendix; published version