Dresden 2011 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 23: Poster 2: Intersectional Session
Q 23.45: Poster
Dienstag, 15. März 2011, 18:00–21:00, P1
Spin and spin-lattice relaxation in isotopically pure diamond — •Jan Honert1, Helmut Fedder1, Michael Klas1, Junichi Isoya3, Matthew Markham2, Daniel Twitchen2, Fedor Jelezko1, and Jörg Wrachtrup1 — 1Universität Stuttgart, 70550 Stuttgart, Germany — 2Element Six Ltd, King's Ride Park, Ascot SL5 8BP, UK — 3Graduate School of Library, Information and Media Studies, University of Tsukuba, 1-2 Kasuga, Tsukuba, Ibaraki 305-8550, Japan
The Nitrogen-Vacancy defect in diamond is a promising solid-state spin qubit, that allows optical readout and coherent spin manipulation even at room temperature. One of the crucial properties with respect to spin based quantum applications is a long spin coherence time T2. In diamond, T2 is typically limited by coupling to 13C nuclear spins. Record T2 times reaching several ms were recently demonstrated using isotopically enriched (99.7% 12C) diamond. Under ideal conditions, the limit for T2 is set by spin-lattice relaxations that can reach tens of ms in typical samples. We study the spin and spin-lattice relaxation time in ultra pure isotopically enriched (up to 99.99%) diamonds. In addition to results from our magnetically shielded setup an overview of the current understanding of the contributing factors to the spin decoherence are presented.