Tracking the polarisation state of light via Hong-Ou-Mandel interferometry
arXiv:1912.12087 · doi:10.1364/OE.382622
Abstract
We provide a statistically robust and accurate framework to measure and track the polarisation state of light employing Hong-Ou-Mandel interference. This is achieved by combining the concepts of maximum likelihood estimation and Fisher information applied to photon detection events. Such an approach ensures that the Cramér-Rao bound is saturated and changes to the polarisation state are established in an optimal manner. Using this method, we show that changes in the linear polarisation state can be measured with 0.6 arcminute precision (0.01 degrees).
Accepted for publication in Optics Express
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