Related papers: An Alternative Algorithm for the Database Search P…

This paper has been withdrawn, as all conjectures (and one claim) have been proven incorrect. Some of what remains may eventually reappear in a different context.

This paper has been withdrawn by the author due to an apparent misunderstanding of quantum feedback control.

This paper has been withdrawn by the author.

This paper has been withdrawn

This paper was withdrawn by the author.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This paper has been withdrawn by the author, due to the insecurity against attacks received in quant-ph/0605027v5.

This paper has been withdrawn

The paper was removed.

This paper has been withdrawn by the author.

This paper has been withdrawn as it has been superseded by 0808.2697

The paper has been withdrawn

This paper has been temporarily withdrawn for corrections.

This paper has been withdrawn by the author.

This paper has been withdrawn

This paper has been withdrawn.

This paper has been withdrawn by the author(s).The scheme presented is insecure.

This paper has been withdrawn by the author and replaced by arXiv:0809.4751

This paper was withdrawn by the author due to a fatal error.

This paper has been withdrawn by the authors because the results obtained have been reported earlier by other authors.

The paper has been withdrawn by the authors