Related papers: Fast quantum computing with semiconductor quantum …

The paper has been withdrawn by the authors for modification.

This paper has been withdrawn by the author(s)

The paper has been withdrawn by the author.

This paper has been withdrawn

This paper has been withdrawn because of serious errors.

The paper has been withdrawn

This paper has been withdrawn by the author due to extremely unscientific errors.

The paper was removed.

This paper has been withdrawn due to security loophole. We thank Dr G. P. he for pointing this to us.

The paper is withdrawn.

This paper has been withdrawn by the author(s) because some experimental results have not been checked by the last two authors.

This paper has been withdrawn by the author due to an error in the computation of the central charge.

This paper has been withdrawn by the author due to an apparent misunderstanding of quantum feedback control.

This paper is withdrawn.

This paper has been withdrawn by the authors since it was strongly elaborated, some new sections appeared. This made the paper significantly differ from current version. Besides two new authors participated in the work. So the authors…

This paper has been withdrawn.

The paper was withdrawn by the authors

This paper has been withdrawn because the first author submitted the paper without previously consulting the rest of the authors.

The paper has been withdrawn by the authors.

This paper was withdrawn by the author.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