Quantum secret sharing protocol between multiparty and multiparty with single photons and unitary transformations

TL;DR

This paper introduces a quantum secret sharing protocol involving multiple parties using single photons and unitary transformations, ensuring secure distribution of secret keys.

Contribution

It presents a novel multiparty quantum secret sharing scheme utilizing single photons and unitary operations, enhancing security and practicality.

Findings

The protocol is proven to be secure against eavesdropping.

It enables secure secret sharing among multiple parties.

The scheme is feasible with current quantum technology.

Abstract

We propose a scheme of quantum secret sharing between Alices' group and Bobs' group with single photons and unitary transformations. In the protocol, one member in Alices' group prepares a sequence of single photons in one of four different states, while other members directly encode their information on the sequence of single photons via unitary operations, after that the last member sends the sequence of single photons to Bobs' group. Then Bobs except for the last one do work similarly. Finally last member in Bobs' group measures the qubits. If Alices and Bobs guarnnted the security of quantum channel by some tests, then the qubit states sent by last member of Alices' group can be used as key bits for secret sharing. It is shown that this scheme is safe.