Dynamic strain-mediated coupling of a single diamond spin to a mechanical resonator


The development of hybrid quantum systems is central to the advancement of emerging quantum technologies, including quantum information science and quantum-assisted sensing. The recent demonstration of high-quality single-crystal diamond resonators has led to significant interest in a hybrid system consisting of nitrogen-vacancy centre spins that interact with the resonant phonon modes of a macroscopic mechanical resonator through crystal strain. However, the nitrogen-vacancy spin-strain interaction has not been well characterized. Here, we demonstrate dynamic, strain-mediated coupling of the mechanical motion of a diamond cantilever to the spin of an embedded nitrogen-vacancy centre. Via quantum control of the spin, we quantitatively characterize the axial and transverse strain sensitivities of the nitrogen-vacancy ground-state spin. The nitrogen-vacancy centre is an atomic scale sensor and we demonstrate spin-based strain imaging with a strain sensitivity of 3 × 10(-6) strain Hz(-1/2). Finally, we show how this spin-resonator system could enable coherent spin-phonon interactions in the quantum regime.

DOI: 10.1038/ncomms5429

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@inproceedings{Ovartchaiyapong2014DynamicSC, title={Dynamic strain-mediated coupling of a single diamond spin to a mechanical resonator}, author={Preeti Ovartchaiyapong and Kenneth W. Lee and Bryan A. Myers and Ania C. Bleszynski Jayich}, booktitle={Nature communications}, year={2014} }