When non i.i.d. information sources can be communicationally useful?

TL;DR

This paper introduces a general scheme to detect nonlocality in non-i.i.d. sources, challenging the common assumption of i.i.d. sources in quantum communication, with potential applications in cryptography and entanglement detection.

Contribution

A novel, broadly applicable scheme for identifying nonlocality in non-i.i.d. sources, useful for quantum communication and entanglement detection.

Findings

Scheme effectively detects nonlocality in non-i.i.d. sources

Applicable to quantum cryptography and communication complexity

Can identify entanglement from non-i.i.d. sources

Abstract

Information sources used for communication purposes usually are assumed to be i.i.d. type, especially as far as entanglement or nonlocality properties are concerned. Here we proposed simple scheme for detection of nonlocality of non i.i.d. sources based on the program idea which can be useful in communication tasks including quantum cryptography and communication complexity reduction. The principle of the scheme is rather general and can be applied to other problems like detection of entanglement coming from non-i.i.d sources.