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Conferences > QELS > 2010 > QThJ > QThJ5

Entanglement-Enhanced Measurement of a Completely Unknown Phase

D. W. Berry, G. Y. Xiang, B. L. Higgins, H. M. Wiseman, and G. J. Pryde

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Abstract

We demonstrate a method for achieving phase measurements with accuracy beyond the standard quantum limit using entangled states. A sophisticated feedback scheme means that no initial estimate of the phase is required.

© 2010 Optical Society of America

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