Published in Physical Review A: How to perform the most accurate possible phase measurements

This paper presents a thorough theoretical treatment (with some bonus new experimental results) of our recent demonstrations of phase measurement algorithms which variously beat the standard limit and achieve the fundamental limit of precision. We show how to do this without resorting to entangled states, both with and without adaptive measurements.

D. W. Berry, B. L. Higgins, S. D. Bartlett, M. W. Mitchell, G. J. Pryde, and H. M. Wiseman
Phys. Rev. A 80, 052114 (2009)

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