Extrema of discrete Wigner functions and applications

Details Extrema of discrete Wigner functions and applications Extrema of discrete Wigner functions and applications

2008-05-22

arxiv.org/abs/0805.3466v2

Phys. Rev. A 78, 022310 (2008)

Physics

Quantum Physics

7 pages, 1 figure. v2: minor changes, published version

Scientific paper

10.1103/PhysRevA.78.022310

We study the class of discrete Wigner functions proposed by Gibbons et al. [Phys. Rev. A 70, 062101 (2004)] to describe quantum states using a discrete phase-space based on finite fields. We find the extrema of such functions for small Hilbert space dimensions, and present a quantum information application: a construction of quantum random access codes. These are constructed using the complete set of phase-space point operators to find encoding states and to obtain the codes' average success rates for Hilbert space dimensions 2,3,4,5,7 and 8.

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