Nonreciprocal frequency conversion with chiral Λ-type atoms
In this paper, we begin with a model of a Λ-type atom whose both transitions are chirally coupled to a wave guide and then extend the model to its giant-atom version. We investigate the single-photon scatterings of the giant-atom model in both the Markovian and the non-Markovian regimes. It is shown...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2021-12-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.3.043226 |
| _version_ | 1827285565955899392 |
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| author | Lei Du Yao-Tong Chen Yong Li |
| author_facet | Lei Du Yao-Tong Chen Yong Li |
| author_sort | Lei Du |
| collection | DOAJ |
| description | In this paper, we begin with a model of a Λ-type atom whose both transitions are chirally coupled to a wave guide and then extend the model to its giant-atom version. We investigate the single-photon scatterings of the giant-atom model in both the Markovian and the non-Markovian regimes. It is shown that the chiral atom-wave-guide couplings enable nonreciprocal, reflectionless, and efficient frequency conversion, while the giant-atom structure introduces intriguing interference effects to the scattering behaviors, such as ultranarrow scattering windows. The chiral giant-atom model exhibits quite different scattering spectra in the two regimes and, in particular, demonstrates non-Markovicity-induced nonreciprocity under specific conditions. These phenomena can be understood from the effective detuning and decay rate of the giant-atom model. We believe that our results have potential applications in integrated photonics and quantum network engineering. |
| first_indexed | 2024-04-24T10:16:55Z |
| format | Article |
| id | doaj.art-0f0eef0774cc4d3c96d9b86d67d6d2dd |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:16:55Z |
| publishDate | 2021-12-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-0f0eef0774cc4d3c96d9b86d67d6d2dd2024-04-12T17:16:50ZengAmerican Physical SocietyPhysical Review Research2643-15642021-12-013404322610.1103/PhysRevResearch.3.043226Nonreciprocal frequency conversion with chiral Λ-type atomsLei DuYao-Tong ChenYong LiIn this paper, we begin with a model of a Λ-type atom whose both transitions are chirally coupled to a wave guide and then extend the model to its giant-atom version. We investigate the single-photon scatterings of the giant-atom model in both the Markovian and the non-Markovian regimes. It is shown that the chiral atom-wave-guide couplings enable nonreciprocal, reflectionless, and efficient frequency conversion, while the giant-atom structure introduces intriguing interference effects to the scattering behaviors, such as ultranarrow scattering windows. The chiral giant-atom model exhibits quite different scattering spectra in the two regimes and, in particular, demonstrates non-Markovicity-induced nonreciprocity under specific conditions. These phenomena can be understood from the effective detuning and decay rate of the giant-atom model. We believe that our results have potential applications in integrated photonics and quantum network engineering.http://doi.org/10.1103/PhysRevResearch.3.043226 |
| spellingShingle | Lei Du Yao-Tong Chen Yong Li Nonreciprocal frequency conversion with chiral Λ-type atoms Physical Review Research |
| title | Nonreciprocal frequency conversion with chiral Λ-type atoms |
| title_full | Nonreciprocal frequency conversion with chiral Λ-type atoms |
| title_fullStr | Nonreciprocal frequency conversion with chiral Λ-type atoms |
| title_full_unstemmed | Nonreciprocal frequency conversion with chiral Λ-type atoms |
| title_short | Nonreciprocal frequency conversion with chiral Λ-type atoms |
| title_sort | nonreciprocal frequency conversion with chiral λ type atoms |
| url | http://doi.org/10.1103/PhysRevResearch.3.043226 |
| work_keys_str_mv | AT leidu nonreciprocalfrequencyconversionwithchiralltypeatoms AT yaotongchen nonreciprocalfrequencyconversionwithchiralltypeatoms AT yongli nonreciprocalfrequencyconversionwithchiralltypeatoms |