Coherent sensing of a mechanical resonator with a single-spin qubit

Shimon Kolkowitz, Ania C. Bleszynski Jayich, Quirin P. Unterreithmeier, Steven D. Bennett, Peter Rabl, J. G.E. Harris, Mikhail D. Lukin

Research output: Contribution to journalArticlepeer-review

327 Scopus citations


Mechanical systems can be influenced by a wide variety of small forces, ranging from gravitational to optical, electrical, and magnetic. When mechanical resonators are scaled down to nanometer-scale dimensions, these forces can be harnessed to enable coupling to individual quantum systems. We demonstrate that the coherent evolution of a single electronic spin associated with a nitrogen vacancy center in diamond can be coupled to the motion of a magnetized mechanical resonator. Coherent manipulation of the spin is used to sense driven and Brownian motion of the resonator under ambient conditions with a precision below 6 picometers. With future improvements, this technique could be used to detect mechanical zero-point fluctuations, realize strong spin-phonon coupling at a single quantum level, and implement quantum spin transducers.

Original languageEnglish
Pages (from-to)1603-1606
Number of pages4
Issue number6076
StatePublished - 30 Mar 2012
Externally publishedYes


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