Robustness of quantum-randomness expansion protocols in the presence of noise

Piotr Andrzej Mironowicz; Marcin Pawłowski

Robustness of quantum-randomness expansion protocols in the presence of noise

Abstract

In this paper we investigate properties of several randomness generation protocols in the device independent framework. Using Bell-type inequalities it is possible to certify that the numbers generated by an untrusted device are indeed random. We present a selection of certificates which guarantee two bits of randomness for each run of the experiment in the noiseless case and require the parties to share a maximally entangled state. To compare them we study their efficiency in the presence of white noise. We find that for different amounts of noise different operators are optimal for certifying most randomness. Therefore the vendor of the device should use different protocols depending on the amount of noise expected to occur. Another of our results that we find particularly interesting is that using a single Bell operator as a figure of merit is rarely optimal.

Authors (2)

Piotr Andrzej Mironowicz dr inż.
Marcin Pawłowski
- University of Gdansk Institute of Theoretical Physics and Astrophysics

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License: Copyright (2013 American Physical Society)

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Category:: Articles
Type:: artykuł w czasopiśmie wyróżnionym w JCR
Published in:: PHYSICAL REVIEW A no. 88, edition 3, pages 1 - 8,
ISSN: 2469-9926
Language:: English
Publication year:: 2013
Bibliographic description:: Mironowicz P., Pawłowski M.: Robustness of quantum-randomness expansion protocols in the presence of noise// PHYSICAL REVIEW A. -Vol. 88, iss. 3 (2013), s.1-8
Verified by:: Gdańsk University of Technology