Regensburg 2013 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 66: Spintronics / Quantum Information: Vacancies in Diamond and SiC (jointly with HL)

TT 66.8: Talk

Friday, March 15, 2013, 11:30–11:45, H14

Detecting and Polarizing Nuclear Spins in Diamond — •Jochen Scheuer¹, Paz London², Jianming Cai³, Ilai Schwarz³, Alex Retzker⁴, Martin B. Plenio³, Masayuki Katagiri^5,6, Tokuyuki Teraji⁶, Satoshi Koizumi⁶, Junichi Isoya⁵, Ran Fischer², Liam McGuinness¹, Boris Naydenov¹, and Fedor Jelezko¹ — ¹Institut für Quantenoptik, Universität Ulm, Ulm, Germany — ²Department of Physics, Technion, Israel Institute of Technology, Haifa, Israel — ³Institut für Theoretische Physik, Universität Ulm, Ulm, Germany — ⁴Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem, Israel — ⁵Graduate School of Library, Information and Media Studies, University of Tsukuba, 1-2 Kasuga, Tsukuba, Ibaraki, Japan — ⁶National Institute for Materials Science, Tsukuba, Ibaraki, Japan

Control and measurement of nuclear spins is essential for medicine, chemistry and physics, but the sensitivity of conventional measurement schemes is limited due to low thermal polarization of nuclei under ambient conditions. We use an electron-nuclear double resonance technique, known as Hartmann-Hahn double resonance, to demonstrate experimentally polarization of single and multiple nuclear spins in a room temperature solid. By transferring polarization from an optically cooled electron spin associated with the nitrogen-vacancy (NV) defect, to carbon nuclei we are able to control spin bath dynamics. This work opens new possibilities for different fields of science, from control over decoherence and use of mesoscopic ensemble of nuclear spins as qubits to enhancement of contrast in magnetic resonance imaging.