Related papers: Can single-photon states violate causality?

We withdraw this paper due to insufficient arguments in the derivation of Theorem 1. See quant-ph/0005062 for the new paper

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This paper has been withdrawn by the author, due to the insecurity against attacks received in quant-ph/0605027v5.

This paper has been withdrawn due to a photometric calibration error.

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This paper has been withdrawn by the author(s) in the light of several other works available and due to a misunderstanding in the authorships.

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This paper has been withdrawn by the author, due a critical mistake on page 3.

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This paper has been withdrawn due to a missing hypothesis in the main statement.

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