Constrained optimization of sequentially generated entangled multiqubit states

Details Constrained optimization of sequentially generated entangled multiqubit states Constrained optimization of sequentially generated entangled multiqubit states

2008-10-06

arxiv.org/abs/0810.0977v2

Phys. Rev. A 80, 022334 (2009)

Physics

Quantum Physics

Slightly improved version as published in Phys. Rev. A

Scientific paper

We demonstrate how the matrix-product state formalism provides a flexible structure to solve the constrained optimization problem associated with the sequential generation of entangled multiqubit states under experimental restrictions. We consider a realistic scenario in which an ancillary system with a limited number of levels performs restricted sequential interactions with qubits in a row. The proposed method relies on a suitable local optimization procedure, yielding an efficient recipe for the realistic and approximate sequential generation of any entangled multiqubit state. We give paradigmatic examples that may be of interest for theoretical and experimental developments.

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