Chiral phase modulation and tunable broadband perfect absorber using the coherent cold atomic ensemble
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| _version_ | 1866913181420486656 |
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| author | Wang, Yi-Xin Zhang, Yan Du, Lei Wu, Jin-Hui |
| author_facet | Wang, Yi-Xin Zhang, Yan Du, Lei Wu, Jin-Hui |
| contents | We investigate the two-channel nonreciprocal scattering of a coherent atomic ensemble under the linear spatial Kramers-Kronig modulation, which has potential applications in chiral phase modulation and broadband coherent perfect/asymmetric absorber that yet is typically unavailable in conventional continuous atomic media. In the regime of electromagnetically induced transparency, we observe the direction-dependent (chiral) phase modulation, which may enrich the burgeoning chiral quantum optics and can be used for implementing photonic filters, unidirectional amplifiers, and coherent asymmetric absorbers. By simplifying the stringent generation condition of coherent perfect absorption (CPA), we demonstrate the possibility of realizing two-channel CPA with broadband and sharp edges. Our proposal may be used to design and integrate some all-optical functional devices at extremely low power levels for quantum information processing and optical communication networks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2310_00590 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Chiral phase modulation and tunable broadband perfect absorber using the coherent cold atomic ensemble Wang, Yi-Xin Zhang, Yan Du, Lei Wu, Jin-Hui Quantum Physics Optics We investigate the two-channel nonreciprocal scattering of a coherent atomic ensemble under the linear spatial Kramers-Kronig modulation, which has potential applications in chiral phase modulation and broadband coherent perfect/asymmetric absorber that yet is typically unavailable in conventional continuous atomic media. In the regime of electromagnetically induced transparency, we observe the direction-dependent (chiral) phase modulation, which may enrich the burgeoning chiral quantum optics and can be used for implementing photonic filters, unidirectional amplifiers, and coherent asymmetric absorbers. By simplifying the stringent generation condition of coherent perfect absorption (CPA), we demonstrate the possibility of realizing two-channel CPA with broadband and sharp edges. Our proposal may be used to design and integrate some all-optical functional devices at extremely low power levels for quantum information processing and optical communication networks. |
| title | Chiral phase modulation and tunable broadband perfect absorber using the coherent cold atomic ensemble |
| topic | Quantum Physics Optics |
| url | https://arxiv.org/abs/2310.00590 |