Squeezed-slit Bohr-Einstein Interferometer
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arXiv
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| Auteurs principaux: | , , , , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2026
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| _version_ | 1866910264748670976 |
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| author | Cheng, Hao-Wen Zeng, Xu-Zhao-Qiu Zhang, Yu-Chen Deng, Yu-Hao Wu, Zhan Lin, Rui Duan, Yu-Cheng Chen, Zi-Han Rui, Jun Chen, Ming-Cheng Lu, Chao-Yang Pan, Jian-Wei |
| author_facet | Cheng, Hao-Wen Zeng, Xu-Zhao-Qiu Zhang, Yu-Chen Deng, Yu-Hao Wu, Zhan Lin, Rui Duan, Yu-Cheng Chen, Zi-Han Rui, Jun Chen, Ming-Cheng Lu, Chao-Yang Pan, Jian-Wei |
| contents | The Einstein-Bohr recoiling-slit gedankenexperiment, a cornerstone of quantum complementarity, has long been constrained by the zero-point fluctuations of the atomic slit -- the spatial Standard Quantum Limit (SQL). Here we transcend this fundamental boundary through active quantum state engineering of a single-atom slit. By implementing a non-adiabatic quench-evolve-quench protocol, we prepare the atomic motion in a squeezed state, dynamically redistributing phase-space uncertainty to suppress which-path information and restore high-visibility interference beyond the static vacuum limit. We report an intrinsic visibility of $0.938_{-0.008}^{+0.004}$, violating the SQL ($0.819$) by over 10 standard deviations, corresponding to $7.6(2)$ dB of effective squeezing. Our work reveals Kerr-induced non-Gaussian dynamics and reinterprets the traditional interferometer as a powerful tool for continuous-variable Wigner tomography, bridging the gap between quantum foundations and advanced metrology. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_28038 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Squeezed-slit Bohr-Einstein Interferometer Cheng, Hao-Wen Zeng, Xu-Zhao-Qiu Zhang, Yu-Chen Deng, Yu-Hao Wu, Zhan Lin, Rui Duan, Yu-Cheng Chen, Zi-Han Rui, Jun Chen, Ming-Cheng Lu, Chao-Yang Pan, Jian-Wei Quantum Physics Atomic Physics Optics Popular Physics The Einstein-Bohr recoiling-slit gedankenexperiment, a cornerstone of quantum complementarity, has long been constrained by the zero-point fluctuations of the atomic slit -- the spatial Standard Quantum Limit (SQL). Here we transcend this fundamental boundary through active quantum state engineering of a single-atom slit. By implementing a non-adiabatic quench-evolve-quench protocol, we prepare the atomic motion in a squeezed state, dynamically redistributing phase-space uncertainty to suppress which-path information and restore high-visibility interference beyond the static vacuum limit. We report an intrinsic visibility of $0.938_{-0.008}^{+0.004}$, violating the SQL ($0.819$) by over 10 standard deviations, corresponding to $7.6(2)$ dB of effective squeezing. Our work reveals Kerr-induced non-Gaussian dynamics and reinterprets the traditional interferometer as a powerful tool for continuous-variable Wigner tomography, bridging the gap between quantum foundations and advanced metrology. |
| title | Squeezed-slit Bohr-Einstein Interferometer |
| topic | Quantum Physics Atomic Physics Optics Popular Physics |
| url | https://arxiv.org/abs/2605.28038 |