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Regensburg 2016 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 23: Quantum Information Systems
(Joint session of HL, MA, O and TT organized by HL)

TT 23.6: Talk

Tuesday, March 8, 2016, 11:15–11:30, H15

Force sensing via individual nitrogen-vacancy spins in diamond mechanical resonatorPhani Peddibhotla1, Michael Barson2, Kumar Ganesan3, Preeti Ovartchaiyapong5, Berndt Koslowski4, Ania Jayich5, Steven Prawer3, Neil Manson2, Marcus Doherty2, and •Fedor Jelezko11Institute for Quantum Optics, University of Ulm, 89081 Ulm, Germany — 2Laser Physics Centre, Australian National University, Canberra, Australia — 3School of Physics, University of Melbourne, Victoria 3100, Australia — 4Institute for Solid State Physics, University of Ulm, 89081 Ulm, Germany — 5Department of Physics University of California, Santa Barbara

We propose to use the embedded nitrogen-vacancy (NV) defect states in single-crystal diamond cantilever for measuring external forces. In order to experimentally demonstrate the force sensing capabilities, we employed an atomic force microscope (AFM) tip to apply a force on the non-clamped end of the diamond cantilever, which in turn induces lattice strain to a NV center close to the clamping point of a cantilever. The strain-mediated coupling between NV spin and diamond mechanics is observable via clear signatures in the optically detected electron spin resonance (ESR) spectrum of the NV center [1, 2].

[1] J. Teissier et al., PRL 113, 020503 (2014). [2] P. Ovartchaiyapong, et al., Nat. Commun. 5:4429 (2014).

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