Secure sequential transmission of quantum information

TL;DR

This paper introduces a quantum communication protocol enabling secure transmission of any quantum state through multiple nodes, utilizing chained private quantum channels with specific Pauli operation relations, and analyzes its security and efficiency.

Contribution

It presents a novel quantum sequential transmission protocol that leverages chained private quantum channels and studies its security and efficiency in detail.

Findings

Protocol allows secure multi-node quantum state transmission

Uses approximate private quantum channels with Pauli relations

Provides security and efficiency analysis of the scheme

Abstract

We propose a quantum communication protocol that can be used to transmit any quantum state, one party to another via several intermediate nodes, securely on quantum communication network. The scheme makes use of the sequentially chained and approximate version of private quantum channels satisfying certain commutation relation of $n$-qubit Pauli operations. In this paper, we study the sequential structure, security analysis, and efficiency of the quantum sequential transmission (QST) protocol in depth.