Grover-Sagnac interferometer
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866915119584247808 |
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| author | Schwarze, Christopher R. Manni, Anthony D. Simon, David S. Ndao, Abdoulaye Sergienko, Alexander V. |
| author_facet | Schwarze, Christopher R. Manni, Anthony D. Simon, David S. Ndao, Abdoulaye Sergienko, Alexander V. |
| contents | We demonstrate a nontraditional design of the Sagnac interferometer by replacing the commonly used beam splitter with a linear-optical Grover multiport. This substitution creates a pole at the origin of the device parameter space with an associated resonance in the output intensity. The structure of this resonance is dictated only by the non-reciprocal portion of the phase acquired in the Sagnac loop. This property directly results from adopting the more symmetric and higher-dimensional central scattering coin, and allows for a different approach to registering and detecting the non-reciprocal Sagnac phase. This parameter may be extracted from the width of a peak or dip in the interferogram instead of tracing small changes in power as in traditional Sagnac interferometry. We discuss how losses affect the system and potential metrological applications. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_14049 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Grover-Sagnac interferometer Schwarze, Christopher R. Manni, Anthony D. Simon, David S. Ndao, Abdoulaye Sergienko, Alexander V. Optics We demonstrate a nontraditional design of the Sagnac interferometer by replacing the commonly used beam splitter with a linear-optical Grover multiport. This substitution creates a pole at the origin of the device parameter space with an associated resonance in the output intensity. The structure of this resonance is dictated only by the non-reciprocal portion of the phase acquired in the Sagnac loop. This property directly results from adopting the more symmetric and higher-dimensional central scattering coin, and allows for a different approach to registering and detecting the non-reciprocal Sagnac phase. This parameter may be extracted from the width of a peak or dip in the interferogram instead of tracing small changes in power as in traditional Sagnac interferometry. We discuss how losses affect the system and potential metrological applications. |
| title | Grover-Sagnac interferometer |
| topic | Optics |
| url | https://arxiv.org/abs/2501.14049 |