Hannover 2013 – wissenschaftliches Programm

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SYQG: Symposium Quantum meets gravity and metrology

SYQG 2: Quantum meets gravity and metrology II

SYQG 2.3: Vortrag

Dienstag, 19. März 2013, 15:15–15:30, E 415

Sensing single remote nuclear spins in Nitrogen-Vacancy centers — •Jan Honert¹, Nan Zhao¹, Bernhard Schmid¹, Michael Klas¹, Junichi Isoya², Matthew Markham³, Daniel Twitchen³, Fedor Jelezko⁴, Ren-Bao Liu⁵, Helmut Fedder¹, and Jörg Wrachtrup¹ — ¹3. Physikalisches Institut, University Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany — ²Graduate School of Library, Information and Media Studies, University of Tsukuba, 1-2 Kasuga, Tsukuba, Ibaraki 305-8550, Japan — ³Element Six Ltd, Ascot SL5 8BP, Berks, England — ⁴Institut für Quantenoptik, Universität Ulm, 89081 Ulm, Germany — ⁵Department of Physics and Centre for Quantum Coherence, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China

The detection of single nuclear spins would be useful for fields ranging from basic science to quantum information technology. In addition, the ability to address weakly coupled nuclear spins in the solid state expands the number of addressable qubits surrounding the detector spin significantly. Here, we present the detection and identification of single and remote ¹³C nuclear spins embedded in nuclear spin baths surrounding a single electron spin of a nitrogen-vacancy centre in diamond. We are able to amplify and detect the weak magnetic field noise (∼10 nT) from a single nuclear spin located about 3 nm from the centre using dynamical decoupling control, and achieve a detectable hyperfine coupling strength as weak as ∼300 Hz. We also confirm the quantum nature of the coupling present the first steps and results towards manipulating those spins.