Strong Magnetic Coupling Between an Electronic Spin Qubit and a Mechanical Resonator

By Peter Rabl, P. Cappellaro, M. Dutt, Liang Jiang, J. Maze, Mikhail D. Lukin. 2008

302 citations recorded by the source corpus.

We describe a technique that enables a strong coherent coupling between a single electronic spin qubit associated with a nitrogen-vacancy impurity in diamond and the quantized motion of a magnetized nanomechanical resonator tip. This coupling is achieved via careful preparation of dressed spin states which are highly sensitive to the motion of the resonator but insensitive to perturbations from the nuclear-spin bath. In combination with optical pumping techniques, the coherent exchange between spin and motional excitations enables ground-state cooling and controlled generation of arbitrary quantum superpositions of resonator states. Optical spin readout techniques provide a general measurement toolbox for the resonator with quantum limited precision.

Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/a0c92be684673b0bf4fdcc2c2a5a323ba9a9dbf7

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In Atomic and Molecular Physics, and Optics

In Materials Chemistry

Citations in the corpus

Continuous mode cooling and phonon routers for phononic quantum networks (2012, background): “For nano-scale mechanical resonators with frequencies in the few MHz regime this coupling can be substantial and reach values λ/(2π) ≈ 10− 100 kHz [50].”
Near-field cavity optomechanics with nanomechanical oscillators (2009, methodology): “Finally, the used microtoroidal platform has already been demonstrated as interface for atomic cavity quantum electrodynamics (cQED) [47], enabling potentially the interaction of phonons, photons and atoms or qubits, as recently proposed [48, 49].”
A quantum spin transducer based on nanoelectromechanical resonator arrays (2009, background): “50 nm the resulting coupling can approach λ/(2π) ≈ 100 kHz [28].”
Hybrid discrete- and continuous-variable quantum information (2014, unknown): “a quantum dot [43], an NV center in diamond [44], an atom [45] and a two-level defect [46]) to a mechanical oscillator have been proposed and some recent preliminary steps have been realized [47–50].”
Quantum superposition, entanglement, and state teleportation of a microorganism on an electromechanical oscillator (2015, background): “Nat Commun 2:572 [62] Rabl P, Cappellaro P, Dutt MVG et al (2009) Strong magnetic coupling between an electronic spin qubit and a mechanical resonator.”