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Polarization-Entangled Light Pulses of 105 Photons

Timur Sh. Iskhakov, Ivan N. Agafonov, Maria V. Chekhova, and Gerd Leuchs
Phys. Rev. Lett. 109, 150502 – Published 10 October 2012
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Abstract

We experimentally demonstrate polarization entanglement for squeezed vacuum pulses containing more than 105 photons. We also study photon-number entanglement by calculating the Schmidt number and measuring its operational counterpart. Theoretically, our pulses are the more entangled the brighter they are. This promises important applications in quantum technologies, especially photonic quantum gates and quantum memories.

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  • Received 18 June 2012

DOI:https://doi.org/10.1103/PhysRevLett.109.150502

© 2012 American Physical Society

Authors & Affiliations

Timur Sh. Iskhakov1, Ivan N. Agafonov2, Maria V. Chekhova1,2, and Gerd Leuchs1,3

  • 1Max Planck Institute for the Science of Light, Günther-Scharowsky-Straße 1/Bau 24, 91058 Erlangen, Germany
  • 2Department of Physics, M. V. Lomonosov Moscow State University, Leninskie Gory, 119991 Moscow, Russia
  • 3University of Erlangen-Nürnberg, Staudtstrasse 7/B2, 91058 Erlangen, Germany

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Issue

Vol. 109, Iss. 15 — 12 October 2012

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