Scalable multiphoton quantum metrology with neither pre- nor post-selected measurements
نویسندگان
چکیده
The quantum statistical fluctuations of the electromagnetic field establish a limit, known as shot-noise on sensitivity optical measurements performed with classical technologies. However, technologies are not constrained by this limit. In regard, possibility using every photon produced sources light to estimate small physical parameters, beyond constitutes one main goals optics. Here we experimentally demonstrate scalable protocol for quantum-enhanced phase estimation across broad range phases, neither pre- nor post-selected measurements. This is achieved through efficient design source spontaneous parametric down-conversion in combination photon-number-resolving detection. robustness two-mode squeezed vacuum states against loss allows us outperform schemes based N00N states, which single enough remove all information from state. contrast other that rely or conditional measurements, our technique could be improved generation and detection high-order pairs. unique feature makes it scalable. Our work important multiphoton interference such imaging, boson sampling networks.
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ژورنال
عنوان ژورنال: Applied physics reviews
سال: 2021
ISSN: ['1931-9401']
DOI: https://doi.org/10.1063/5.0063294