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

This paper has been withdrawn. See quant-ph/9806031 for a discussion.

This paper is withdrawn. See quant-ph/9806031 for a discussion.

This paper has been withdrawn by the authors owing to a mistake in the proof of the basic lemma.

This paper has been withdrawn by the authors pending corrections.

This paper has been withdrawn by the authors due to a possible inconsistency in the program code.

This paper has been withdrawn by the author due to an error.

This paper has been withdrawn by the author due to errors.

Quantum metrology promises improved sensitivity in parameter estimation over classical procedures. However, there is an extensive debate over the question how the sensitivity scales with the resources (such as the average photon number) and…

This paper has been withdrawn by the author due to a error in attachment of source file.

This paper has been withdrawn by the author due to a crucial sign error in equation 1

This paper was withdrawn by the author because severe errors were discovered.

This paper has been withdrawn by the authors due to need of essential revision.

This paper has being withdrawn by the authors due to an error in the conclusion.

This paper has been withdrawn by the author(s)

This paper has been withdrawn by the authors due to a likely hole in the proof.

This paper has been withdrawn by the author due to a crucial error.

This paper has been withdrawn by the author due to an error in the proof of Proposition 4.8.

This paper has been withdrawn by the authors, due a crucial error.

This paper is being withdrawn by the authors in order to correct some errors and also to introduce improved theoretical techniques.

This paper was withdrawn by the author due to an error in the proof of the main result; essentially the parameter R used in the proof may depend on the manifold (M, g), not just on dimension and pinching constant.