Related papers: Comment on ``Fundamental relation between electric…

This paper has been withdrawn by the authors, due to an error in the proof of Lemma 3.1.

This paper has been withdrawn due to a crucial theoretical error.

This paper was withdrawn by the author.

This paper has been withdrawn by the author(s),

This paper has been withdrawn by the authors due to some technical problems in the paper.

This paper has been withdrawn by the authors due to a crucial error.

The paper is withdrawn due to an error in Section 2.

The paper has bene withdrawn by the author.

This paper has been withdrawn due to a crucial theoretical and experimental error.

This paper has been withdrawn by the authors due to a numerical error. A revised version will be posted shortly.

This paper has been withdrawn by the author due to pending experimental investigation to avoid certain potential experimental uncertainty.

This paper has been withdrawn by the author.

This paper was withdrawn by the author. It turns out that similar ideas have been presented before. The author apologizes.

This paper has been withdrawn by the author, since now all four parts of the review are available as a single file 0804.1639

This paper has been wthdrawn by the authors due to a critical error in the assessment of the entanglement and, consequently, of the protocol fidelity, when no postselection is performed.

This paper has been withdrawn by the author due to a crucial sign error in Theorem 3.4.

Paper withdrawn. A revised version may appear later.

This paper has been withdrawn by the author due to the incorrect argument for the security.

This paper has been withdrawn by the author due to error in equation (46).

This paper has been withdrawn