Local encoding of classical information onto quantum states

Details Local encoding of classical information onto quantum states Local encoding of classical information onto quantum states

2007-02-20

arxiv.org/abs/quant-ph/0702190v3

J. Mod. Opt., 54, 2259 - 2273 (2007)

Physics

Quantum Physics

10 pages, 4 figures. Version II. Missing references added, minor simplification of theorem and minor errors corrected. Publish

Scientific paper

In this article we investigate the possibility of encoding classical information onto multipartite quantum states in the distant laboratory framework. We show that for all states generated by Clifford operation there always exist such an encoding, this includes all stabilizer states such as cluster states and all graph states. We also show encoding for classes of symmetric states (which cannot be generated by Clifford operations). We generalise our approach using group theoretic methods introducing the unifying notion of Pseudo Clifford operations. All states generated by Pseudo Clifford operations are locally encodable (unifying all our examples), and we give a general method for generating sets of many such locally encodable states.

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