4.6 Article

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

期刊

PHYSICAL REVIEW B
卷 79, 期 4, 页码 -

出版社

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.79.041302

关键词

diamond; dressed states; ground states; nitrogen; optical pumping; vacancies (crystal)

资金

  1. ITAMP
  2. NSF
  3. Packard Foundation.

向作者/读者索取更多资源

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.

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