Strong magnetic coupling between an electronic spin qubit and a mechanical resonator

Details Strong magnetic coupling between an electronic spin qubit and a mechanical resonator Strong magnetic coupling between an electronic spin qubit and a mechanical resonator

2008-06-23

arxiv.org/abs/0806.3606v1

PRB 79, 041302 (2009)

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

10.1103/PhysRevB.79.041302

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 nano-mechanical 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 the 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.

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