Quantum catalysis of information

TL;DR

This paper introduces the concept of quantum catalysis of information, showing that quantum systems can enable information tasks without disturbance, challenging long-held beliefs about quantum measurement limitations.

Contribution

It predicts a new phenomenon where quantum systems facilitate information exchange without disturbance, contradicting established no-go theorems.

Findings

Quantum catalysis allows information exchange without disturbance.

Challenges the traditional view of quantum measurement disturbance.

Proposes a novel way to utilize quantum information.

Abstract

Heisenberg's uncertainty principle and recently derived many no-go theorems including the no-cloning theorem and the no-deleting theorem have corroborated the idea that we can never access quantum information without causing disturbance. Here we disprove this presumption by predicting a novel phenomenon, `quantum catalysis of information,' where a system enables an otherwise impossible task by exchanging information through a quantum communication channel. This fact implies that making use of quantum information does not always cause disturbance.