title: Dynamic strain-mediated coupling of a single diamond spin to a mechanical resonator.
abstract: 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.
authors.affiliation: 1] Department of Physics, University of California Santa Barbara, Broida Hall, Santa Barbara, California 93106, USA [2].
authors.forename: Preeti
authors.initials: P
authors.lastname: Ovartchaiyapong
authors.affiliation: 1] Department of Physics, University of California Santa Barbara, Broida Hall, Santa Barbara, California 93106, USA [2].
authors.forename: Kenneth W
authors.initials: KW
authors.lastname: Lee
authors.affiliation: Department of Physics, University of California Santa Barbara, Broida Hall, Santa Barbara, California 93106, USA.
authors.forename: Bryan A
authors.initials: BA
authors.lastname: Myers
authors.affiliation: Department of Physics, University of California Santa Barbara, Broida Hall, Santa Barbara, California 93106, USA.
authors.forename: Ania C Bleszynski
authors.initials: AC
authors.lastname: Jayich