Sender-controlled measurement-device-independent multiparty quantum communication

TL;DR

This paper introduces a sender-controlled, measurement-device-independent multiparty quantum communication protocol that enhances security and reliability in quantum networks by allowing the sender to verify channels and receivers before secret sharing.

Contribution

It presents a novel multiparty quantum communication protocol that is sender-controlled and secure against device imperfections and untrusted nodes.

Findings

Protocol enables secure multiparty quantum secret sharing.

Sender can verify channel security before message encoding.

Enhances practicality of quantum networks with untrusted devices.

Abstract

Multiparty quantum communication is an important branch of quantum networks. It enables private information transmission with information-theoretic security among legitimate parties. We propose a sender-controlled measurement-device-independent multiparty quantum communication protocol. The sender Alice divides a private message into several parts and delivers them to different receivers for secret sharing with imperfect measurement devices and untrusted ancillary nodes. Furthermore, Alice acts as an active controller and checks the security of quantum channels and the reliability of each receiver before she encodes her private message for secret sharing, which makes the protocol convenient for multiparity quantum communication.