Location-Dependent Communications using Quantum Entanglement

TL;DR

This paper demonstrates that quantum entanglement enables unconditional location verification in communication systems, allowing secure, real-time communication only at specific geographical points, surpassing classical limitations.

Contribution

It introduces a novel quantum communication protocol for unconditional location verification, a feat impossible with classical methods, regardless of adversaries' resources.

Findings

Quantum entanglement enables unconditional location verification.

The protocol allows real-time communication at specific locations.

Classical systems cannot achieve this level of location security.

Abstract

The ability to unconditionally verify the location of a communication receiver would lead to a wide range of new security paradigms. However, it is known that unconditional location verification in classical communication systems is impossible. In this work we show how unconditional location verification can be achieved with the use of quantum communication channels. Our verification remains unconditional irrespective of the number of receivers, computational capacity, or any other physical resource held by an adversary. Quantum location verification represents a new application of quantum entanglement that delivers a feat not possible in the classical-only channel. For the first time, we possess the ability to deliver real-time communications viable only at specified geographical coordinates.