Related papers: Optimality of the Heisenberg limit for continuous-…

This paper has been withdrawn by the authors due to a crucial error.

This paper has been withdrawn by the authors due to an error in the main theorem.

This paper has been withdrawn by the author. The central result is now included in quant-ph/0309056 (as in the journal publication!). An erratum on the Heisenberg perturbation series estimate is also included therein.

This paper has been withdrawn by the authors, due to a flaw in the proof of Theorem 1. This preprint is superseded by quant-ph/0610027, where a correct proof can be found. Thanks to Rainer Siegmund-Schultze for spotting the error.

This paper has been withdrawn due to a crucial theoretical error.

This paper has been withdrawn by the authors due to some fatal errors in the analysis.

%auto-ignore This paper has been withdrawn by the author, due to a crucial error.

This paper has been withdrawn by the author(s), due a crucial sign error in conclusion .

This paper has been withdrawn by the author due to the incorrect argument for the security.

This paper has been withdrawn by the author, due to a crucial error in page 5.

This paper has been withdrawn by the author due to extremely unscientific errors.

This paper has been withdrawn by the author due to an error estimate in Lemma 3.1.

This paper has been withdrawn by the author due to a crucial error.

This paper is withdrawn from submission due to a critical error in the proof of main theorem.

This paper has been withdrawn by the authors due to inadequate arguments.

This paper has been withdrawn by the author, due to a crucial error in the proof of Thm.1

This paper has been withdrawn by the author due to a crucial error in one of equation in (3).

This paper has been withdrawn due to a crucial error in the proof of the main theorem

This paper has been withdrawn by the author due to a coming paper completely superseding it.

This paper has been withdrawn by the author due to a crucial error in the submission action.