Related papers: Simple pulse sequence for quantum logic operations…

This paper was withdrawn by the author.

This paper has been withdrawn due to an error in figure 5.

This paper has been withdrawn by the author due to error in equation (46).

This paper has been withdrawn.

This paper has been withdrawn by the authors due to a crucial error in calculation.

This paper has been withdrawn by the author(s), due a crucial error in the data.

This paper has been withdrawn by the author due to a crucial error in the submission action.

This paper has been withdrawn by Wenji Deng (e-mail: [email protected]) for further modification at Oct. 12, 1998. {PACS: 03.75.Fi, 05.30.Jp.64.60.-i, 32.80.Pj}

This paper has been withdrawn by the authors owing to a mistake in the proof of the basic lemma.

This paper has been withdrawn by the author due to a crucial error in eq.59. I apologize for the inconveniences.

This paper has been withdrawn by the author: it was a too preliminary version.

This paper has been withdrawn by the author due to an error in equations 39 and 41.

The paper has been withdrawn

This paper has been withdrawn by the authors; replaced by arXiv:0705.2531v2 [quant-ph].

This paper has been withdrawn by the author.

This paper has been withdrawn by the author, due a crucial error in the main idea.

This paper has been withdrawn by the author.

This paper was withdrawn by the authors.

This paper was withdrawn by the author because severe errors were discovered.

This paper has been withdrawn by the author due to a errors in figure 3,4