Editing Certified finite randomness expansion (section)

Randomness expansion is a protocol for [[Quantum Random Number Generator]] which takes as input a private, uniformly random string and outputs a longer string which is (close to) private and uniformly random. The protocol of [https://www.nature.com/articles/nature09008 Pironio et. al.] enables randomness expansion of such an input using only two identical untrusted (i.e. provided by an adversary) measurement devices. Privacy of the output string is guaranteed to a given confidence level and its length depends on the stochastic outcome of a  [https://wiki.veriqloud.fr/index.php?title=Glossary CHSH game], the confidence level desired and the [https://wiki.veriqloud.fr/index.php?title=Glossary randomness extractor] used in post-processing.

Such a protocol is useful in the case where one already has access to a private source for true randomness, but whose use is prohibitively expensive or whose access is limited. By applying randomness expansion, it is possible to make this resource go further using potentially much cheaper or more simple methods.

Tags: [[: Category: Building Blocks|Building Blocks]], [[: Category: Quantum Functionality|Quantum Functionality]], [[:Category: Specific Task|Specific Task]] [[Category: Building Blocks]] [[Category: Quantum Functionality]] [[Category: Specific Task]] [[Category:Entanglement Distribution Network stage]]