Related papers: Generalized Continuous Variables Quantum Key Distr…

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This paper has been withdrawn by the author, due to a crucial error in the proof of Lemma 3.1.

This paper has been withdrawn by the authors due to some fatal errors in the analysis.

This paper has been withdrawn by the authors, due a oversimplified decoherence model. It will be substituted by a new work.

This paper has been withdrawn by the author.

This paper has been withdrawn by the authors

The paper has been withdrawn by the author due to unhappy mistake in the initial scope of the work.

This paper has been withdrawn because the author no longer believes the firewall argument is correct.

This paper has been withdraw by the author due to adding more modeling results.

This paper has been withdrawn by the author due to some mistakes

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This paper has been withdrawn by the authors due to an error.

This paper has been withdrawn.

This paper has been withdrawn by the author(s), due a crucial error in Eqn. 30.

This paper was withdrawn on 20.11.97.

This paper has been withdrawn by the author due to essential mistakes in some previous versions.

The article is taken out.

This paper has been withdrawn by the author due to a crucial sign error in equation 1.

This paper has been withdrawn by the author: it was a too preliminary version.