Multiparty Quantum Secret Report

Abstract

A multiparty quantum secret report scheme is proposed with quantum encryption. The boss Alice and her $M$ agents first share a sequence of ($M$+1)-particle Greenberger--Horne--Zeilinger (GHZ) states that only Alice knows which state each ($M$+1)-particle quantum system is in. Each agent exploits a controlled-not (CNot) gate to encrypt the travelling particle by using the particle in the GHZ state as the control qubit. The boss Alice decrypts the travelling particle with a CNot gate after performing a ${\sigma }_x$ operation on her particle in the GHZ state or not. After the GHZ states (the quantum key) are used up, the parties check whether there is a vicious eavesdropper, say Eve, monitoring the quantum line, by picking out some samples from the GHZ states shared and measure them with two measuring bases. After confirming the security of the quantum key, they use the GHZ states remained repeatedly for next round of quantum communication. This scheme has the advantage of high intrinsic efficiency for qubits and the total efficiency.

4 pages, no figures

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Cited by in corpus (7)

• Controlled Teleportation of an Arbitrary Multi-Qudit State in a General Form with d-Dimensional Greenberger-Horne-Zeilinger States
• Multiparty quantum secret sharing with pure entangled states and decoy photons
• Eavesdropping on the "Ping-Pong" Quantum Communication Protocol Freely in a Noise Channel
• Fault tolerant channel-encrypting quantum dialogue against collective noise
• Multiparty Quantum Remote Secret Conference
• Economical Quantum Secure Direct Communication Network with Single Photons
• Quantum Conference