Quantum plasmonic sensing by Hong-Ou-Mandel interferometry
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866929502769119232 |
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| author | Yoon, Seungjin Choi, Yu Sung Tame, Mark Yoon, Jae Woong Polyakov, Sergey V. Lee, Changhyoup |
| author_facet | Yoon, Seungjin Choi, Yu Sung Tame, Mark Yoon, Jae Woong Polyakov, Sergey V. Lee, Changhyoup |
| contents | We propose a quantum plasmonic sensor using Hong-Ou-Mandel (HOM) interferometry that measures the refractive index of an analyte, embedded in a plasmonic beam splitter composed of a dual-Kretschmann configuration, which serves as a frustrated total internal reflection beamsplitter. The sensing performance of the HOM interferometry, combined with single-photon detectors, is evaluated through Fisher information for estimation of the refractive index of the analyte. This is subsequently compared with the classical benchmark that considers the injection of a coherent state of light into the plasmonic beamsplitter. By varying the wavelength of the single photons and the refractive index of the analyte, we identify a wide range where a 50 % quantum enhancement is achieved and discuss the observed behaviors in comparison with the classical benchmark. We expect this study to provide a useful insight into the advancement of quantum-enhanced sensing technologies, with direct implications for a wide range of nanophotonic beamsplitter structures. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_10994 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quantum plasmonic sensing by Hong-Ou-Mandel interferometry Yoon, Seungjin Choi, Yu Sung Tame, Mark Yoon, Jae Woong Polyakov, Sergey V. Lee, Changhyoup Quantum Physics Optics We propose a quantum plasmonic sensor using Hong-Ou-Mandel (HOM) interferometry that measures the refractive index of an analyte, embedded in a plasmonic beam splitter composed of a dual-Kretschmann configuration, which serves as a frustrated total internal reflection beamsplitter. The sensing performance of the HOM interferometry, combined with single-photon detectors, is evaluated through Fisher information for estimation of the refractive index of the analyte. This is subsequently compared with the classical benchmark that considers the injection of a coherent state of light into the plasmonic beamsplitter. By varying the wavelength of the single photons and the refractive index of the analyte, we identify a wide range where a 50 % quantum enhancement is achieved and discuss the observed behaviors in comparison with the classical benchmark. We expect this study to provide a useful insight into the advancement of quantum-enhanced sensing technologies, with direct implications for a wide range of nanophotonic beamsplitter structures. |
| title | Quantum plasmonic sensing by Hong-Ou-Mandel interferometry |
| topic | Quantum Physics Optics |
| url | https://arxiv.org/abs/2404.10994 |