Time-Optimal Generation of Cluster States

Details Time-Optimal Generation of Cluster States Time-Optimal Generation of Cluster States

2009-03-24

arxiv.org/abs/0903.4066v2

Phys. Rev. A 79, 042304 (2009)

Physics

Quantum Physics

Published version

Scientific paper

10.1103/PhysRevA.79.042304

The definition of a cluster state naturally suggests an implementation scheme: find a physical system with an Ising coupling topology identical to that of the target state, and evolve freely for a time of 1/2J. Using the tools of optimal control theory, we address the question of whether or not this implementation is time-optimal. We present some examples where it is not and provide an explanation in terms of geodesics on the Bloch-sphere.

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