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Tracking the polarisation state of light via Hong-Ou-Mandel interferometry

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).

preprint2019arXivOpen access
Natapon HarnchaiwatFeng ZhuNiclas WesterbergErik GaugerJonathan Leach
quant-ph
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Open access5 authors1 topic
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Citations: 0Reviews: 0Saves: 0Code: not linkedDataset: not linkedInstitutions: 0

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Natapon HarnchaiwatFeng ZhuNiclas WesterbergErik GaugerJonathan Leach

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