Perfect continuous-variable quantum microcombs
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arXiv
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866908701878648832 |
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| author | Li, Kangkang Wang, Yue Wang, Ze Zhou, Xin Li, Jincheng Cheng, Yinke Wu, Binyan Gong, Qihuang Li, Bei-Bei Yang, Qi-Fan |
| author_facet | Li, Kangkang Wang, Yue Wang, Ze Zhou, Xin Li, Jincheng Cheng, Yinke Wu, Binyan Gong, Qihuang Li, Bei-Bei Yang, Qi-Fan |
| contents | Quantum microcombs generated in high-Q microresonators provide compact, multiplexed sources of entangled modes for continuous-variable (CV) quantum information processing. While deterministic generation of CV states via Kerr-induced two-mode squeezing has been demonstrated, achieving spectrally uniform squeezing remains challenging because of asymmetry and anomalies in the dispersion profile. Here we overcome these limitations by combining a microresonator with an engineered mode spectrum and optimized pump conditions. We realize a CV quantum microcomb comprising 14 independent two-mode squeezed states, each exhibiting more than 4 dB of raw squeezing (up to 4.3 dB) across a 0.7 THz bandwidth. This uniform, high-performance quantum resource represents a key step toward scalable, integrated CV quantum technologies operating beyond classical limits. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_08650 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Perfect continuous-variable quantum microcombs Li, Kangkang Wang, Yue Wang, Ze Zhou, Xin Li, Jincheng Cheng, Yinke Wu, Binyan Gong, Qihuang Li, Bei-Bei Yang, Qi-Fan Quantum Physics Optics Quantum microcombs generated in high-Q microresonators provide compact, multiplexed sources of entangled modes for continuous-variable (CV) quantum information processing. While deterministic generation of CV states via Kerr-induced two-mode squeezing has been demonstrated, achieving spectrally uniform squeezing remains challenging because of asymmetry and anomalies in the dispersion profile. Here we overcome these limitations by combining a microresonator with an engineered mode spectrum and optimized pump conditions. We realize a CV quantum microcomb comprising 14 independent two-mode squeezed states, each exhibiting more than 4 dB of raw squeezing (up to 4.3 dB) across a 0.7 THz bandwidth. This uniform, high-performance quantum resource represents a key step toward scalable, integrated CV quantum technologies operating beyond classical limits. |
| title | Perfect continuous-variable quantum microcombs |
| topic | Quantum Physics Optics |
| url | https://arxiv.org/abs/2512.08650 |