Resonant excitation of a single dichroic vacancy spin in silicon carbide

ORAL

Abstract

Color centers in solid-state hosts are very attractive systems for scalable and integrated nano photonics and quantum information architectures. The ideal system should meet three key features: first, an electron spin coherence time on the order of milliseconds to permit quantum state manipulation and coupling to surrounding nuclear spins; second, a large fraction of photons must be emitted in the zero phonon line to couple different centers to each other via spin-photon entanglement; third, excellent spectral stability. Here, we demonstrate that all three criteria are met by the dichroic vacancy defect center (V1) in 4H-SiC [1]. The V1 center is a S=3/2 spin system with well-separated optical transitions at around 860 nm [2]. We perform resonant optical excitation studies on single V1 centers to explore the ground and excited state level structures. We will also present studies on the spin dynamics under resonant excitation. We note further that no spectral diffusion has been observed. Therefore, our results pave the way for a robust and scalable quantum information platform based on color centers in silicon carbide [3]. [1] R. Nagy et al., arxiv:1707.02715 [2] M. Widmann et al., Nat. Mater. 14, 164 [3] O. O. Soykal et al., Phys. Rev. B 93, 081207(R) (2016)

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Presenters

  • Roland Nagy

    Univ Stuttgart

Authors

  • Roland Nagy

    Univ Stuttgart

  • Matthias Niethammer

    Univ Stuttgart, 3rd Institute of Physics, University of Stuttgart

  • Florian Kaiser

    Univ Stuttgart

  • Oney Soykal

    Sotera Defense Solutions at Naval research Laboratory, Naval Research Laboratory, Naval Research Laborator

  • Durga Dasari

    Max Planck Institute for Solid State Research, Univ Stuttgart

  • Nguyen Son

    Linkoping Univensity, Linköping University, Semiconductor Materials, IFM, Linköping University

  • Cristian Bonato

    Heriot-Watt University

  • Sang-Yun Lee

    Korea Institute of Science and Technology

  • J. Wrachtrup

    University Stuttgart, 3. Physikalisches Institut, Universität Stuttgart, Univ Stuttgart, 3rd Institute of Physics, University of Stuttgart, University of Stuttgart, Physics Department, University of Stuttgart

  • Alexey Feofanov

    University of Innsbruck, University of Waterloo, Korea University, Okinawa Institute of Science and Technology, University of California - Los Angeles, The University of Manchester, University of Puerto Rico at Humacao, Department of Physics & Electronics, University of Puerto Rico at Cayey, Department of Mathematics-Physics, Oak Ridge National Lab, Max Planck Institute for Chemical Physics of Solids, Department of Physics, University of Puerto Rico, Electrical Engineering Department, University of Arkansas, Department of Physics, University of Arkansas, School of Basic Sciences at IIT Mandi, H.P., India, Computational Biology, Flatiron Institute, Physics, Hong Kong Univ of Sci & Tech, University of California, Los Angeles, Max Planck Inst, Institute for Theoretical Physics, University of Cologne, Department of Physics, Simon Fraser University, Deutsches Elektronen Synchrotron (DESY), Institut fur Theoretische Physik, Univerisitat zu Berlin, Institut fur Physik, Univerisitat zu Berlin, Plymouth State University, The Graduate Center, CUNY, Nordita, KTH Royal Institute of Technology and Stockholm University, Univ of Connecticut - Storrs, Univ Stuttgart, University of Chicago, University of Texas at El Paso, University of Tulsa, California Institute of Technology, Georgia Institute of Technology, Universite Paris Diderot, Laboratoire MPQ, Universita di Trento, BEC Center, ICTP Trieste, Universita di Pisa, Inst of Physics Academia Sinica, Batelle, Cal State Univ- San Bernardino, Chemical Engineering, University of Michigan, QCD Labs, Department of Applied Physics, Aalto University, Yale University, MIT, Harvard Univ, Chemical & Environmental Engineering, University of California, Riverside, University of Frankfurt, Germany, University of Hamburg, Germany, Naval Research Laboratory, Cornell Univ, National Institute for Material Science, U.S. Naval Research Laboratory, Washington DC, Materials Engineering, University of Santa Barbara, Institute of Physics, Chinese Academy of Sciences, Univ of Texas, Arlington, MIT Lincoln Laboratory, University of Sydney, Iowa State University, Purdue University, Kansas State University, University of Maryland, John Hopkins University, Universite de Sherbrooke, Physics, Konkuk University, Perimeter Institute, University of Waterloo, D-Wave, San Jose State University, Université de Sherbrooke, Institute of Physics, EPFL - Lausanne​