Controlled order rearrangement encryption for quantum key distribution

TLDR

The study proposes a technique for orthogonal‑state quantum key distribution. The method transmits entangled qubits through two channels, reorders one channel’s carrier order before transmission to prevent eavesdropping, restores the order at the receiver, and coordinates the rearrangement with a shared control key used repeatedly during the session.

Abstract

A technique is devised to perform orthogonal state quantum key distribution. In this scheme, entangled parts of a quantum information carrier are sent from Alice to Bob through two quantum channels. However, before the transmission, the order of the quantum information carrier in one channel is reordered so that Eve cannot steal useful information. At the receiver's end, the order of the quantum information carrier is restored. The order rearrangement operation in both parties is controlled by a prior shared control key which is used repeatedly in a quantum key distribution session.