Related papers: Molecular quantum phase transistor

This paper has been withdrawn by the authors. We have discovered an error in the evaluation of the diagram, which invalidates our conclusion.

This paper has been withdrawn by the author, since the author does not have enough time to answer every questions on this result.

This paper has been withdrawn by the authors.

The paper has been withdrawn by the author.

This submission has been withdrawn at the request of the author.

This paper has been withdrawn by the author due to some problems.

This paper has been withdrawn by the authors as they feel it inappropriate to publish this paper for the time being.

This paper has been withdrawn by the author, because a better treatment is given in the author's Phd. thesis (Sections 3.4.6 and 4.4), now available on the arxiv.

This paper has been withdrawn by the authors due to several major changes in concepts and results. New version will follow briefly as a new e-print.

This paper has been withdrawn by the author due to a crucial error.

This paper has been withdrawn by the authors due to a gap in the proof of the main result (in 5.3).

This paper has been withdrawn by authors for significant modification.

This paper has been withdrawn Abstract: This paper has been withdrawn by the author due to the publication.

This paper has been withdrawn by the author.

This paper is withdrawn as it is equivalent to the paper quant-ph/9605035 by Gilles Brassard.

This paper has been withdrawn by the author due to a crucial sign error in equation 1.

This paper has been withdrawn.

This paper has been temporarily withdrawn by the author because there are errors in it that require further study.

This paper has been withdrawn by the authors due to some errors.

This paper has been withdrawn by the authors due to a fatal flaw in the central proof.