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Conferences > QIM > 2021 > Tu2A > Tu2A.1

Sensing with few photons: the power of correlations in lossy SU(1,1) interferometers

M. Santandrea, K. H. Luo, M. Stefszky, J. Sperling, H. Herrmann, B. Brecht, and C. Silberhorn

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Abstract

This work explores the phase uncertainty of lossy SU(1,1) interferometers in the low gain regime. We show that coincidence measurement can reach the lowest phase uncertainty possible in the system, regardless of the internal losses.

© 2021 The Author(s)

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