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Two-color bright squeezed vacuum

Ivan N. Agafonov, Maria V. Chekhova, and Gerd Leuchs
Phys. Rev. A 82, 011801(R) – Published 2 July 2010

Abstract

In a strongly pumped nondegenerate traveling-wave optical parametric amplifier, we produce a two-color squeezed vacuum with up to millions of photons per pulse. Our approach to registering this macroscopic quantum state is direct detection of a large number of transverse and longitudinal modes, which is achieved by making the detection time and area much larger than the coherence time and area, respectively. Using this approach, we obtain a record value of twin-beam squeezing for direct detection of bright squeezed vacuum. This makes direct detection of macroscopic squeezed vacuum a practical tool for quantum information applications.

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  • Received 30 October 2009

DOI:https://doi.org/10.1103/PhysRevA.82.011801

©2010 American Physical Society

Authors & Affiliations

Ivan N. Agafonov1, Maria V. Chekhova1,2, and Gerd Leuchs2,3

  • 1Department of Physics, M.V. Lomonosov Moscow State University, Leninskie Gory, 119992 Moscow, Russia
  • 2Max Planck Institute for the Science of Light, Günther-Scharowsky-Straße 1/Bau 24, D-91058 Erlangen, Germany
  • 3University Erlangen-Nürnberg, Staudtstrasse 7/B2, D-91058 Erlangen, Germany

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Issue

Vol. 82, Iss. 1 — July 2010

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