Observation of a phononic Mollow triplet in a multimode hybrid spin-nanomechanical system

B. Pigeau, S. Rohr, L. Mercier de Lépinay, A. Gloppe, V. Jacques and O. Arcizet ()
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B. Pigeau: Institut Néel, CNRS et Université Grenoble Alpes
S. Rohr: Institut Néel, CNRS et Université Grenoble Alpes
L. Mercier de Lépinay: Institut Néel, CNRS et Université Grenoble Alpes
A. Gloppe: Institut Néel, CNRS et Université Grenoble Alpes
V. Jacques: Laboratoire Charles Coulomb, Université de Montpellier and CNRS
O. Arcizet: Institut Néel, CNRS et Université Grenoble Alpes

Nature Communications, 2015, vol. 6, issue 1, 1-7

Abstract: Abstract Reminiscent of the bound character of a qubit’s dynamics confined on the Bloch sphere, the observation of a Mollow triplet in the resonantly driven qubit fluorescence spectrum represents one of the founding signatures of quantum electrodynamics. Here we report on its observation in a hybrid spin-nanomechanical system, where a nitrogen-vacancy spin qubit is magnetically coupled to the vibrations of a silicon carbide nanowire. A resonant microwave field turns the originally parametric hybrid interaction into a resonant process, where acoustic phonons are now able to induce transitions between the dressed qubit states, leading to synchronized spin-oscillator dynamics. We further explore the vectorial character of the hybrid coupling to the bidimensional deformations of the nanowire. The demonstrated microwave assisted synchronization of the spin-oscillator dynamics opens novel perspectives for the exploration of spin-dependent forces, the key ingredient for quantum state transfer.

Date: 2015
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DOI: 10.1038/ncomms9603

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