Nonreciprocal PT-symmetric phase transition in a non-Hermitian chiral quantum optical system
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866911847598260224 |
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| author | Cai, Miao Tang, Jiang-Shan Chen, Ming-Yuan Xia, Keyu |
| author_facet | Cai, Miao Tang, Jiang-Shan Chen, Ming-Yuan Xia, Keyu |
| contents | Phase transitions, non-Hermiticity and nonreciprocity play central roles in fundamental physics. However, the triple interplay of these three fields is of lack in the quantum domain. Here, we show nonreciprocal parity-time-symmetric phase transition in a non-Hermitian chiral quantum electrodynamical system, caused by the directional system dissipation. In remarkable contrast to previously reported nonreciprocal phase transitions, the nonreciprocal parity-time-symmetric phases appear even when the atom-resonator coupling is reciprocal. Nonreciprocal photon blockade is obtained in the nonreciprocal phase region. These results may deepen the fundamental insight of nonreciprocal and non-Hermitian quantum physics, and also open a new door for unconventional quantum manipulation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_12860 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Nonreciprocal PT-symmetric phase transition in a non-Hermitian chiral quantum optical system Cai, Miao Tang, Jiang-Shan Chen, Ming-Yuan Xia, Keyu Quantum Physics Phase transitions, non-Hermiticity and nonreciprocity play central roles in fundamental physics. However, the triple interplay of these three fields is of lack in the quantum domain. Here, we show nonreciprocal parity-time-symmetric phase transition in a non-Hermitian chiral quantum electrodynamical system, caused by the directional system dissipation. In remarkable contrast to previously reported nonreciprocal phase transitions, the nonreciprocal parity-time-symmetric phases appear even when the atom-resonator coupling is reciprocal. Nonreciprocal photon blockade is obtained in the nonreciprocal phase region. These results may deepen the fundamental insight of nonreciprocal and non-Hermitian quantum physics, and also open a new door for unconventional quantum manipulation. |
| title | Nonreciprocal PT-symmetric phase transition in a non-Hermitian chiral quantum optical system |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2404.12860 |