Controlled Quantum Secret Sharing

Abstract

We present a new protocol in which a secret multiqubit quantum state $|\Psi ⟩$ is shared by $n$ players and $m$ controllers, where $|\Psi ⟩$ is the encoding state of a quantum secret sharing scheme. The players may be considered as field agents responsible for carrying out a task, using the secret information encrypted in $|\Psi ⟩$, while the controllers are superiors who decide if and when the task should be carried out and who to do it. Our protocol only requires ancillary Bell states and Bell-basis measurements.

6 pages, 0 figure, RevTeX4; published version with minor changes

References in corpus (2)

• Symmetric multiparty-controlled teleportation of an arbitrary two-particle entanglement
• Experimental Quantum Secret Sharing and Third-Man Quantum Cryptography