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Quantum Nonlinear Optics with a Germanium-Vacancy Color Center in a Nanoscale Diamond Waveguide

M. K. Bhaskar, D. D. Sukachev, A. Sipahigil, R. E. Evans, M. J. Burek, C. T. Nguyen, L. J. Rogers, P. Siyushev, M. H. Metsch, H. Park, F. Jelezko, M. Lončar, and M. D. Lukin
Phys. Rev. Lett. 118, 223603 – Published 31 May 2017
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Abstract

We demonstrate a quantum nanophotonics platform based on germanium-vacancy (GeV) color centers in fiber-coupled diamond nanophotonic waveguides. We show that GeV optical transitions have a high quantum efficiency and are nearly lifetime broadened in such nanophotonic structures. These properties yield an efficient interface between waveguide photons and a single GeV center without the use of a cavity or slow-light waveguide. As a result, a single GeV center reduces waveguide transmission by 18±1% on resonance in a single pass. We use a nanophotonic interferometer to perform homodyne detection of GeV resonance fluorescence. By probing the photon statistics of the output field, we demonstrate that the GeV–waveguide system is nonlinear at the single-photon level.

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  • Received 12 December 2016

DOI:https://doi.org/10.1103/PhysRevLett.118.223603

© 2017 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied PhysicsAtomic, Molecular & OpticalQuantum Information, Science & Technology

Authors & Affiliations

M. K. Bhaskar1,*, D. D. Sukachev1,2, A. Sipahigil1, R. E. Evans1, M. J. Burek3, C. T. Nguyen1, L. J. Rogers4, P. Siyushev4, M. H. Metsch4, H. Park5, F. Jelezko4, M. Lončar3, and M. D. Lukin1,†

  • 1Department of Physics, Harvard University, 17 Oxford Street, Cambridge, Massachusetts 02138, USA
  • 2P. N. Lebedev Physical Institute of the RAS, Leninsky Prospekt 53, Moscow 119991, Russia
  • 3John A. Paulson School of Engineering and Applied Sciences, Harvard University, 29 Oxford Street, Cambridge, Massachusetts 02138, USA
  • 4Institute for Quantum Optics, University Ulm, Albert-Einstein-Allee 11, 89081 Ulm, Germany
  • 5Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, USA

  • *mbhaskar@g.harvard.edu
  • lukin@physics.harvard.edu

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Issue

Vol. 118, Iss. 22 — 2 June 2017

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