Wednesday, May 1, 2013

1304.8128 (Hoi-Kwan Lau et al.)

Quantum secret sharing with continuous-variable cluster states    [PDF]

Hoi-Kwan Lau, Christian Weedbrook
We extend the idea of cluster state quantum secret sharing to the continuous-variable regime. Both classical and quantum information can be shared by distributing finitely squeezed continuous-variable cluster states through either secure or insecure channels. We show that the sharing rate of classical secrets can be estimated by standard continuous-variable quantum key distribution techniques. We also analyse the performance of quantum state sharing by computing the shared entanglement between the authorised parties and the dealer.
View original: http://arxiv.org/abs/1304.8128

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