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arXiv · 1711.03635

Sub-shot-noise-limited phase estimation via SU(1,1) interferometer with thermal states

Xiaoping Ma·Chenglong You·Sushovit Adhikari·Elisha S. Matekole·Hwang Lee·Jonathan P. Dowling
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Abstract

We theoretically study the phase sensitivity of an SU(1,1) interferometer with a thermal state and squeezed vacuum state as inputs and parity detection as measurement. We find that phase sensitivity can beat the shot-noise limit and approaches the Heisenberg limit with increasing input photon number.

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Xiaoping Ma, Chenglong You, Sushovit Adhikari, Elisha S. Matekole, Hwang Lee, Jonathan P. Dowling. 2017-11-09. Sub-shot-noise-limited phase estimation via SU(1,1) interferometer with thermal states. https://doi.org/10.1364/oe.26.018492

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