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| Main Authors: | , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2507.00935 |
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| _version_ | 1866911032305254400 |
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| author | Niu, Zhengqi Nie, Wei Bao, Daqiang He, Xiaoliang Gao, Wanpeng Liu, Kuang Hoi, I. -C. Liu, Yu-xi Xie, Xiaoming Wang, Zhen Lin, Zhi-Rong |
| author_facet | Niu, Zhengqi Nie, Wei Bao, Daqiang He, Xiaoliang Gao, Wanpeng Liu, Kuang Hoi, I. -C. Liu, Yu-xi Xie, Xiaoming Wang, Zhen Lin, Zhi-Rong |
| contents | A many-body quantum system which consists of collective quantum states, such as superradiant and subradiant states, behaves as a multi-level superatom in light-matter interaction. In this work, we experimentally study one-dimensional superatoms in waveguide quantum electrodynamics with a periodic array of superconducting artificial atoms. We engineer the periodic atomic array with two distinct nearest-neighbor spacings, i.e., $d$=$λ_0/2$ and $d$=$λ_0/4$, which correspond to Bragg and anti-Bragg scattering conditions, respectively. The system consists of eight atoms arranged to maintain these specific interatomic distances. By controlling atomic frequencies, we modify Bragg and anti-Bragg superatoms, resulting in distinctly different quantum optical phenomena, such as collectively induced transparency and a broad photonic bandgap. Moreover, due to strong waveguide-atom couplings in superconducting quantum circuits, efficient light manipulations are realized in small-size systems. Our work demonstrates tunable optical properties of Bragg and anti-Bragg superatoms, as well as their potential applications in quantum devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_00935 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Light Manipulation via Tunable Collective Quantum States in Waveguide-Coupled Bragg and Anti-Bragg Superatoms Niu, Zhengqi Nie, Wei Bao, Daqiang He, Xiaoliang Gao, Wanpeng Liu, Kuang Hoi, I. -C. Liu, Yu-xi Xie, Xiaoming Wang, Zhen Lin, Zhi-Rong Quantum Physics A many-body quantum system which consists of collective quantum states, such as superradiant and subradiant states, behaves as a multi-level superatom in light-matter interaction. In this work, we experimentally study one-dimensional superatoms in waveguide quantum electrodynamics with a periodic array of superconducting artificial atoms. We engineer the periodic atomic array with two distinct nearest-neighbor spacings, i.e., $d$=$λ_0/2$ and $d$=$λ_0/4$, which correspond to Bragg and anti-Bragg scattering conditions, respectively. The system consists of eight atoms arranged to maintain these specific interatomic distances. By controlling atomic frequencies, we modify Bragg and anti-Bragg superatoms, resulting in distinctly different quantum optical phenomena, such as collectively induced transparency and a broad photonic bandgap. Moreover, due to strong waveguide-atom couplings in superconducting quantum circuits, efficient light manipulations are realized in small-size systems. Our work demonstrates tunable optical properties of Bragg and anti-Bragg superatoms, as well as their potential applications in quantum devices. |
| title | Light Manipulation via Tunable Collective Quantum States in Waveguide-Coupled Bragg and Anti-Bragg Superatoms |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2507.00935 |