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All-Optical Initialization, Readout, and Coherent Preparation of Single Silicon-Vacancy Spins in Diamond

Lachlan J. Rogers, Kay D. Jahnke, Mathias H. Metsch, Alp Sipahigil, Jan M. Binder, Tokuyuki Teraji, Hitoshi Sumiya, Junichi Isoya, Mikhail D. Lukin, Philip Hemmer, and Fedor Jelezko
Phys. Rev. Lett. 113, 263602 – Published 22 December 2014
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Abstract

The silicon-vacancy (SiV) color center in diamond has attracted attention because of its unique optical properties. It exhibits spectral stability and indistinguishability that facilitate efficient generation of photons capable of demonstrating quantum interference. Here we show optical initialization and readout of electronic spin in a single SiV center with a spin relaxation time of T1=2.4±0.2ms. Coherent population trapping (CPT) is used to demonstrate coherent preparation of dark superposition states with a spin coherence time of T2=35±3ns. This is fundamentally limited by orbital relaxation, and an understanding of this process opens the way to extend coherence by engineering interactions with phonons. Hyperfine structure is observed in CPT measurements with the Si29 isotope which allows access to nuclear spin. These results establish the SiV center as a solid-state spin-photon interface.

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  • Received 12 October 2014

DOI:https://doi.org/10.1103/PhysRevLett.113.263602

This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Published by the American Physical Society

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Diamond Spins Shining Bright

Published 22 December 2014

The spin on a silicon defect in diamond can be prepared in a coherent quantum state, a promising sign that it could encode information in a quantum internet.

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Authors & Affiliations

Lachlan J. Rogers1, Kay D. Jahnke1, Mathias H. Metsch1, Alp Sipahigil2, Jan M. Binder1, Tokuyuki Teraji3, Hitoshi Sumiya4, Junichi Isoya5, Mikhail D. Lukin2, Philip Hemmer6, and Fedor Jelezko1

  • 1Institute for Quantum Optics and Center for Integrated Quantum Science and Technology (IQst), Ulm University, Ulm D-89081, Germany
  • 2Department of Physics, Harvard University, 17 Oxford Street, Cambridge, Massachusetts 02138, USA
  • 3National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
  • 4Advanced Materials R & D Laboratories, Sumitomo Electric Industries Limited, Itami, Hyogo 664-0016, Japan
  • 5Research Center for Knowledge Communities, University of Tsukuba, 1-2 Kasuga, Tsukuba, Ibaraki 305-8550, Japan
  • 6Electrical & Computer Engineering Department, Texas A&M University, College Station, Texas 77843, USA

See Also

All-Optical Formation of Coherent Dark States of Silicon-Vacancy Spins in Diamond

Benjamin Pingault, Jonas N. Becker, Carsten H. H. Schulte, Carsten Arend, Christian Hepp, Tillmann Godde, Alexander I. Tartakovskii, Matthew Markham, Christoph Becher, and Mete Atatüre
Phys. Rev. Lett. 113, 263601 (2014)

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Vol. 113, Iss. 26 — 31 December 2014

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