Quantum computation and quantum information
Quantum computation and quantum information
ACM SIGACT News - A special issue on cryptography
Secure Multiparty Quantum Computation with (Only) a Strict Honest Majority
FOCS '06 Proceedings of the 47th Annual IEEE Symposium on Foundations of Computer Science
Controlled teleportation against uncooperation of part of supervisors
Quantum Information Processing
Quantum tasks using six qubit cluster states
Quantum Information Processing
Quantum state sharing of an arbitrary four-qubit GHZ-type state by using a four-qubit cluster state
Quantum Information Processing
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In the paper, a scheme is proposed for hierarchical quantum information splitting with an unknown eight-qubit cluster state. The Boss Alice wants to distribute a quantum secret to seven distant agents who are divided into two grades. Three agents are in the upper grade and four agents are in the lower grade. Every agent of the upper grade only needs the collaboration of three of the other six agents to get the secret, but all the agents of the lower grade need the collaboration of all the other six agents. In other words, different agents in different grades have different authorities to recover Boss' secret. And the agent in upper grade is more powerful than the one in the lower grades which needs more information to recover the secret.