Regensburg 2016 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 25: Quantum Information Systems (Joint session of HL and TT, organized by HL)
HL 25.6: Vortrag
Dienstag, 8. März 2016, 11:15–11:30, H15
Force sensing via individual nitrogen-vacancy spins in diamond mechanical resonator — Phani Peddibhotla1, Michael Barson2, Kumar Ganesan3, Preeti Ovartchaiyapong5, Berndt Koslowski4, Ania Jayich5, Steven Prawer3, Neil Manson2, Marcus Doherty2, and •Fedor Jelezko1 — 1Institute 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).