Quantum entanglement enabled ellipsometer for phase retardance measurement
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arXiv
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| Auteurs principaux: | , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866917599293472768 |
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| author | Xie, Meng-Yu Niu, Su-Jian Li, Yin-Hai Ge, Zheng Gao, Ming-Yuan Han, Zhao-Qi-Zhi Chen, Ren-Hui Zhou, Zhi-Yuan Shi, Bao-Sen |
| author_facet | Xie, Meng-Yu Niu, Su-Jian Li, Yin-Hai Ge, Zheng Gao, Ming-Yuan Han, Zhao-Qi-Zhi Chen, Ren-Hui Zhou, Zhi-Yuan Shi, Bao-Sen |
| contents | An ellipsometer is a vital precision tool used for measuring optical parameters with wide applications in many fields, including accurate measurements in film thickness, optical constants, structural profiles, etc. However, the precise measurement of photosensitive materials meets huge obstacles because of the excessive input photons, therefore the requirement of enhancing detection accuracy under low incident light intensity is an essential topic in the precision measurement. In this work, by combining a polarization-entangled photon source with a classical transmission-type ellipsometer, the quantum ellipsometer with the PSA (Polarizer-Sample-Analyzer) and the Senarmount method is constructed firstly to measure the phase retardation of the birefringent materials. The experimental results show that the accuracy can reach to nanometer scale at extremely low input intensity, and the stability are within 1% for all specimens tested with a compensator involved. Our work paves the way for precision measurement at low incident light intensity, with potential applications in measuring photosensitive materials, active-biological samples and other remote monitoring scenarios. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_17401 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quantum entanglement enabled ellipsometer for phase retardance measurement Xie, Meng-Yu Niu, Su-Jian Li, Yin-Hai Ge, Zheng Gao, Ming-Yuan Han, Zhao-Qi-Zhi Chen, Ren-Hui Zhou, Zhi-Yuan Shi, Bao-Sen Quantum Physics Optics An ellipsometer is a vital precision tool used for measuring optical parameters with wide applications in many fields, including accurate measurements in film thickness, optical constants, structural profiles, etc. However, the precise measurement of photosensitive materials meets huge obstacles because of the excessive input photons, therefore the requirement of enhancing detection accuracy under low incident light intensity is an essential topic in the precision measurement. In this work, by combining a polarization-entangled photon source with a classical transmission-type ellipsometer, the quantum ellipsometer with the PSA (Polarizer-Sample-Analyzer) and the Senarmount method is constructed firstly to measure the phase retardation of the birefringent materials. The experimental results show that the accuracy can reach to nanometer scale at extremely low input intensity, and the stability are within 1% for all specimens tested with a compensator involved. Our work paves the way for precision measurement at low incident light intensity, with potential applications in measuring photosensitive materials, active-biological samples and other remote monitoring scenarios. |
| title | Quantum entanglement enabled ellipsometer for phase retardance measurement |
| topic | Quantum Physics Optics |
| url | https://arxiv.org/abs/2402.17401 |