Economical (k,m)-threshold controlled quantum teleportation

Details Economical (k,m)-threshold controlled quantum teleportation Economical (k,m)-threshold controlled quantum teleportation

2009-01-19

arxiv.org/abs/0901.2674v5

Phys. Rev. A 79, 062313 (2009)

Physics

Quantum Physics

11 pages, 2 figures, v2: minor revision, discussions improved, an equation corrected in procedure (A) of section 4.3, v3: majo

Scientific paper

10.1103/PhysRevA.79.062313

We study a (k,m)-threshold controlling scheme for controlled quantum teleportation. A standard polynomial coding over GF(p) with prime p > m-1 needs to distribute a d-dimensional qudit with d >= p to each controller for this purpose. We propose a scheme using m qubits (two-dimensional qudits) for the controllers' portion, following a discussion on the benefit of a quantum control in comparison to a classical control of a quantum teleportation.

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