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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2404.00496 |
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| _version_ | 1866916186430636032 |
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| author | Kim, Sangbae Stohr, Joachim Rotermund, Fabian Ham, Byoung S. |
| author_facet | Kim, Sangbae Stohr, Joachim Rotermund, Fabian Ham, Byoung S. |
| contents | We demonstrate theoretically and experimentally how the diffraction and interferometric resolution limit for single-mode coherent cw laser light can be overcome by multi-photon interference. By use of a Mach-Zehnder interferometer, operated in the single input and single or double output port geometries, we observe a fringe width reduction of the conventional interference pattern, predicted by the wave or single photon quantum theory, by a factor of up to $1/\sqrt{2N}$ through coincident detection of $N=2,3,4$ photons. Our scheme does not require squeezed or entangled light to overcome the standard quantum limit and greatly facilitates precision interferometry experiments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_00496 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Reducing of the Uncertainty Product of Coherent Light through Multi-Photon Interference Kim, Sangbae Stohr, Joachim Rotermund, Fabian Ham, Byoung S. Quantum Physics We demonstrate theoretically and experimentally how the diffraction and interferometric resolution limit for single-mode coherent cw laser light can be overcome by multi-photon interference. By use of a Mach-Zehnder interferometer, operated in the single input and single or double output port geometries, we observe a fringe width reduction of the conventional interference pattern, predicted by the wave or single photon quantum theory, by a factor of up to $1/\sqrt{2N}$ through coincident detection of $N=2,3,4$ photons. Our scheme does not require squeezed or entangled light to overcome the standard quantum limit and greatly facilitates precision interferometry experiments. |
| title | Reducing of the Uncertainty Product of Coherent Light through Multi-Photon Interference |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2404.00496 |