Entanglement-based quantum communication may prevent tracking the message sender

TL;DR

This paper proposes a quantum communication protocol that uses entanglement and local measurements to prevent tracking of the message sender's location, enhancing communication secrecy.

Contribution

It introduces a novel quantum communication method that secures the sender's location by combining entanglement, local measurements, and classical communication, unlike classical systems.

Findings

Quantum communication can prevent sender tracking

Pre-distributed entanglement secures sender location

Protocol maintains message secrecy against location attacks

Abstract

The possibility of attaining current position of the message sender without person's consent seriously compromises the secrecy of correspondence. Classical communication systems cannot guarantee the security of communication against unwanted location tracking, because the sender must broadcast a signal at the moment of sending the message. The source of the signal could be always located, at least in principle. We show that quantum communication enables sending the message with pre-distributed entangled quantum systems, local weak measurements, time synchronization between the sender and the receiver and classical communication by the message receiver alone, therefore, physically securing the sender's location.