Nonlocality enhanced precision in quantum polarimetry via entangled photons

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Pedram, Ali and Besaga, Vira R. and Setzpfandt, Frank and Müstecaplıoğlu, Özgür Esat (2024) Nonlocality enhanced precision in quantum polarimetry via entangled photons. Advanced Quantum Technologies . ISSN 2511-9044 Published Online First https://dx.doi.org/10.1002/qute.202400059

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Abstract

A nonlocal quantum approach is presented to polarimetry, leveraging the phenomenon of entanglement in photon pairs to enhance the precision in sample property determination. By employing two distinct channels, one containing the sample of interest and the other serving as a reference, the conditions are explored under which the inherent correlation between entangled photons can increase measurement sensitivity. Specifically, the quantum Fisher information (QFI) is calculated and compare the accuracy and sensitivity for the cases of single sample channel versus two channel quantum state tomography measurements. The theoretical results are verified by experimental analysis. The theoretical and experimental framework demonstrates that the nonlocal strategy enables enhanced precision and accuracy in extracting information about sample characteristics more than the local measurements. Depending on the chosen estimators and noise channels present, theoretical and experimental results show that noise-induced bias decreases the precision for the estimated parameter. Such a quantum-enhanced nonlocal polarimetry holds promise for advancing diverse fields including material science, biomedical imaging, and remote sensing, via high-precision measurements through quantum entanglement.
Item Type: Article
Uncontrolled Keywords: polarimetry; quantum metrology; quantum optics; quantum state tomography
Divisions: Faculty of Engineering and Natural Sciences
Depositing User: Özgür Esat Müstecaplıoğlu
Date Deposited: 23 Aug 2024 15:14
Last Modified: 23 Aug 2024 15:14
URI: https://research.sabanciuniv.edu/id/eprint/49800

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