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Conferences > QIM > 2014 > QTu3B > QTu3B.3

Ultra-sensitive atomic spin measurements with a nonlinear interferometer

R. J. Sewell, M. Napolitano, N. Behbood, G. Colangelo, F. Martin Ciurana, and M. W. Mitchell

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Abstract

We demonstrate an ultra-sensitive, non-destructive nonlinear measurement of atomic spin, with absolute sensitivity 9 dB beyond the best comparable linear measurement, and observe measurement-induced spin squeezing, confirming a central prediction of nonlinear quantum metrology.

© 2014 Optical Society of America

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