Low-Noise Amplification of a Continuous-Variable Quantum State

R. C. Pooser, A. M. Marino, V. Boyer, K. M. Jones, and P. D. Lett
Phys. Rev. Lett. 103, 010501 – Published 29 June 2009

Abstract

We present an experimental realization of a low-noise, phase-insensitive optical amplifier using a four-wave mixing interaction in hot Rb vapor. Performance near the quantum limit for a range of amplifier gains, including near unity, can be achieved. Such low-noise amplifiers are essential for so-called quantum cloning machines and are useful in quantum information protocols. We demonstrate that amplification and “cloning” of one half of a two-mode squeezed state is possible while preserving entanglement.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 12 February 2009

DOI:https://doi.org/10.1103/PhysRevLett.103.010501

©2009 American Physical Society

Authors & Affiliations

R. C. Pooser1,*, A. M. Marino1, V. Boyer1,2, K. M. Jones3, and P. D. Lett1,†

  • 1Joint Quantum Institute, National Institute of Standards and Technology and University of Maryland, Gaithersburg, Maryland 20899 USA
  • 2MUARC, School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom
  • 3Department of Physics, Williams College, Williamstown, Massachusetts 01267 USA

  • *rpooser@nist.gov
  • paul.lett@nist.gov

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 103, Iss. 1 — 3 July 2009

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×