Phonon cooling and lasing with nitrogen-vacancy centers in diamond

Abstract

We investigate the strain-induced coupling between a nitrogen-vacancy impurity and a resonant vibrational mode of a diamond nanoresonator. We show that under near-resonant laser excitation of the electronic states of the impurity, this coupling can modify the state of the resonator and either cool the resonator close to the vibrational ground state or drive it into a large amplitude coherent state. We derive a semi-classical model to describe both effects and evaluate the stationary state of the resonator mode under various driving conditions. In particular, we find that by exploiting resonant single and multi-phonon transitions between near-degenerate electronic states, the coupling to high-frequency vibrational modes can be significantly enhanced and dominate over the intrinsic mechanical dissipation. Our results show that a single nitrogen-vacancy impurity can provide a versatile tool to manipulate and probe individual phonon modes in nanoscale diamond structures.

Electrically and Mechanically Tunable Electron Spins in Silicon Carbide Color Centers

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Hybrid sensors based on colour centres in diamond and piezoactive layers

“…Besides its application in signal transduction and precision measurement, the proposed hybrid system can be exploited to couple the NV-center spin to mechanical oscillations, and significantly enhance the coherent coupling between these two degrees of freedom. This would allow fast mechanical control of spin qubits, large phonon induced spin-spin interaction, and efficient phonon cooling by an NV center [21][22][23][24][25][26].…”

Cooling phonons with phonons: Acoustic reservoir engineering with silicon-vacancy centers in diamond

“…The application of this technique for mechanical resonators coupled to dissipative two-or multi-level systems has been analyzed in various previous works [6,9,12,57,58]. As a result, we obtain an effective master equation for the reduced density operator of the bending mode,ρ b ,ρ…”

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