FIBER-BASED HIGH-DIMENSIONAL QUANTUM COMMUNICATION

Samuele Altilia

Anton Zeilinger

L.-M. Duan, Mikhail D. Lukin, P. Zoller +1 more

Xin Wang, Yimin Liu, Lian-Fang Han +1 more

The first protocol of multiparty quantum secret sharing of secure direct communication [Phys. Lett. A342 (2005) 60] is generalized to the high-dimensional case via quantum superdense coding. The generalized protocol has the advantages of higher capacity and better security.

Serge Massar

Časlav Brukner, Tomasz Paterek, Marek Żukowski

We introduce new communication complexity problems whose quantum solution exploits entanglement between higher-dimensional systems. We show that the quantum solution is more efficient than the broad class of classical ones. The difference between the efficiencies for the quantum and classical protocols grows with the dimensionality of the entangled systems.