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Robust amplification of Santha-Vazirani sources with three devices

Authors
  • Mironowicz, Piotr
  • Gallego, Rodrigo
  • Pawlowski, Marcin
Type
Published Article
Publication Date
Apr 27, 2015
Submission Date
Jan 31, 2013
Identifiers
DOI: 10.1103/PhysRevA.91.032317
Source
arXiv
License
Yellow
External links

Abstract

We demonstrate that amplification of arbitrarily weak randomness is possible using quantum resources. We present a randomness amplification protocol that involves Bell experiments. We find a Bell inequality which can amplify arbitrarily weak randomness and give a detailed analysis of the protocol involving it. Our analysis includes finding a sufficient violation of Bell inequality as a function of the initial quality of randomness. It has a very important property that for any quality the required violation is strictly lower than possible to obtain using quantum resources. Among other things, it means that the protocol takes a finite amount of time to amplify arbitrarily weak randomness.

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