Enhanced Whispering Gallery Mode Phase Shift using Indistinguishable Photon Pairs
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866913330984124416 |
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| author | Jones, Callum Vidiella-Barranco, Antonio Xavier, Jolly Vollmer, Frank |
| author_facet | Jones, Callum Vidiella-Barranco, Antonio Xavier, Jolly Vollmer, Frank |
| contents | We present a theoretical investigation of a whispering gallery mode (WGM) resonator coupled to a Mach-Zehnder interferometer (MZI) and show a bimodal coincidence transmission spectrum when the input state is an indistinguishable photon pair. This is due to the doubled WGM phase shift experienced by the path-entangled state in the interferometer. Further, we model the noise in a WGM resonance shift measurement comparing photon pairs with a coherent state. At least a four-fold improvement in the signal-to-noise ratio (SNR) is possible, with clear implications for quantum-enhanced WGM sensing. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_17409 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Enhanced Whispering Gallery Mode Phase Shift using Indistinguishable Photon Pairs Jones, Callum Vidiella-Barranco, Antonio Xavier, Jolly Vollmer, Frank Quantum Physics Optics We present a theoretical investigation of a whispering gallery mode (WGM) resonator coupled to a Mach-Zehnder interferometer (MZI) and show a bimodal coincidence transmission spectrum when the input state is an indistinguishable photon pair. This is due to the doubled WGM phase shift experienced by the path-entangled state in the interferometer. Further, we model the noise in a WGM resonance shift measurement comparing photon pairs with a coherent state. At least a four-fold improvement in the signal-to-noise ratio (SNR) is possible, with clear implications for quantum-enhanced WGM sensing. |
| title | Enhanced Whispering Gallery Mode Phase Shift using Indistinguishable Photon Pairs |
| topic | Quantum Physics Optics |
| url | https://arxiv.org/abs/2404.17409 |