Chirality-induced quantum nonreciprocity
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arXiv
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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866913800914993152 |
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| author | Zhang, Zimo Xu, Zhongxiao Huang, Ran Lu, Xingda Zhang, Fengbo Li, Donghao Özdemir, Şahin K. Nori, Franco Bao, Han Xiao, Yanhong Chen, Bing Jing, Hui Shen, Heng |
| author_facet | Zhang, Zimo Xu, Zhongxiao Huang, Ran Lu, Xingda Zhang, Fengbo Li, Donghao Özdemir, Şahin K. Nori, Franco Bao, Han Xiao, Yanhong Chen, Bing Jing, Hui Shen, Heng |
| contents | Chirality, nonreciprocity, and quantum correlations are at the center of a wide range of intriguing effects and applications across natural sciences and emerging quantum technologies. However, the direct link combining these three essential concepts has remained unknown till now. Here, we establish a chiral non-Hermitian platform with flying atoms and demonstrate chirality-induced nonreciprocal bipartite quantum correlations between two channels: Quantum correlation emerges when two spatially separated light beams of the same polarization propagate in opposite directions in the atomic cloud, and it becomes zero when they travel in the same direction. Thus, just by flipping the propagation direction of one of the beams while keeping its polarization the same as the other beam, we can create or annihilate quantum correlations between two channels. We also show that this nonreciprocal quantum correlation can be extended to multi-color sidebands with Floquet engineering. Our findings may pave the road for realizing one-way quantum effects, such as nonreciprocal squeezing or entanglement, with a variety of chiral devices, for the emerging applications of e.g., directional quantum network or nonreciprocal quantum metrology. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_13437 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Chirality-induced quantum nonreciprocity Zhang, Zimo Xu, Zhongxiao Huang, Ran Lu, Xingda Zhang, Fengbo Li, Donghao Özdemir, Şahin K. Nori, Franco Bao, Han Xiao, Yanhong Chen, Bing Jing, Hui Shen, Heng Quantum Physics Atomic Physics Optics Chirality, nonreciprocity, and quantum correlations are at the center of a wide range of intriguing effects and applications across natural sciences and emerging quantum technologies. However, the direct link combining these three essential concepts has remained unknown till now. Here, we establish a chiral non-Hermitian platform with flying atoms and demonstrate chirality-induced nonreciprocal bipartite quantum correlations between two channels: Quantum correlation emerges when two spatially separated light beams of the same polarization propagate in opposite directions in the atomic cloud, and it becomes zero when they travel in the same direction. Thus, just by flipping the propagation direction of one of the beams while keeping its polarization the same as the other beam, we can create or annihilate quantum correlations between two channels. We also show that this nonreciprocal quantum correlation can be extended to multi-color sidebands with Floquet engineering. Our findings may pave the road for realizing one-way quantum effects, such as nonreciprocal squeezing or entanglement, with a variety of chiral devices, for the emerging applications of e.g., directional quantum network or nonreciprocal quantum metrology. |
| title | Chirality-induced quantum nonreciprocity |
| topic | Quantum Physics Atomic Physics Optics |
| url | https://arxiv.org/abs/2504.13437 |