Quantum Properties of Dichroic Silicon Vacancies in Silicon Carbide

Roland Nagy, Matthias Widmann, Matthias Niethammer, Durga B. R. Dasari, Ilja Gerhardt, Öney O. Soykal, Marina Radulaski, Takeshi Ohshima, Jelena Vučković, Nguyen Tien Son, Ivan G. Ivanov, Sophia E. Economou, Cristian Bonato, Sang-Yun Lee, and Jörg Wrachtrup
Phys. Rev. Applied 9, 034022 – Published 23 March 2018
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Abstract

Although various defect centers have displayed promise as either quantum sensors, single photon emitters, or light-matter interfaces, the search for an ideal defect with multifunctional ability remains open. In this spirit, we study the dichroic silicon vacancies in silicon carbide that feature two well-distinguishable zero-phonon lines and analyze the quantum properties in their optical emission and spin control. We demonstrate that this center combines 40% optical emission into the zero-phonon lines showing the contrasting difference in optical properties with varying temperature and polarization, and a 100% increase in the fluorescence intensity upon the spin resonance, and long spin coherence time of their spin-3/2 ground states up to 0.6 ms. These results single out this defect center as a promising system for spin-based quantum technologies.

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  • Received 16 August 2017
  • Revised 1 January 2018

DOI:https://doi.org/10.1103/PhysRevApplied.9.034022

© 2018 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied PhysicsQuantum Information, Science & Technology

Authors & Affiliations

Roland Nagy1,†, Matthias Widmann1,†, Matthias Niethammer1, Durga B. R. Dasari1, Ilja Gerhardt1,2, Öney O. Soykal3, Marina Radulaski4, Takeshi Ohshima5, Jelena Vučković4, Nguyen Tien Son6, Ivan G. Ivanov6, Sophia E. Economou7, Cristian Bonato8, Sang-Yun Lee9,*, and Jörg Wrachtrup1,2

  • 1Third Institute of Physics, University of Stuttgart and Center for Integrated Quantum Science and Technology, IQST, Pfaffenwaldring 57, D-70569 Stuttgart, Germany
  • 2Max Planck Institute for Solid State Research, Heisenbergstrasse 1, D-70569 Stuttgart, Germany
  • 3Naval Research Laboratory, Washington, D.C. 20375, USA
  • 4E. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA
  • 5National Institutes for Quantum and Radiological Science and Technology, Takasaki, Gunma 370-1292, Japan
  • 6Department of Physics, Chemistry, and Biology, Linköping University, SE-58183 Linköping, Sweden
  • 7Department of Physics, Virginia Polytechnic Institute & State University, Blacksburg, Virginia 24061, USA
  • 8Institute of Photonics and Quantum Sciences, SUPA, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom
  • 9Center for Quantum Information, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea

  • *sangyun.lee@kist.re.kr
  • These authors contributed equally to this work.

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Issue

Vol. 9, Iss. 3 — March 2018

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