Experimental observation of information flow in the anti-$\mathcal{PT}$-symmetric system
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arXiv
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| Autores principales: | , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2019
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866913421987938304 |
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| author | Wen, Jingwei Qin, Guoqing Zheng, Chao Wei, Shijie Kong, Xiangyu Xin, Tao Long, Guilu |
| author_facet | Wen, Jingwei Qin, Guoqing Zheng, Chao Wei, Shijie Kong, Xiangyu Xin, Tao Long, Guilu |
| contents | The recently theoretical and experimental researches related to $\mathcal{PT}$-symmetric system have attracted unprecedented attention because of various novel features and potentials in extending canonical quantum mechanics. However, as the counterpart of $\mathcal{PT}$-symmetry, there are only a few researches on anti-$\mathcal{PT}$-symmetry. Here, we propose an algorithm for simulating the universal anti-$\mathcal{PT}$-symmetric system with quantum circuit. Utilizing the protocols, an oscillation of information flow is observed for the first time in our Nuclear Magnetic Resonance quantum simulator. We will show that information will recover from the environment completely when the anti-$\mathcal{PT}$-symmetry is broken, whereas no information can be retrieved in the symmetry-unbroken phase. Our work opens the gate for practical quantum simulation and experimental investigation of universal anti-$\mathcal{PT}$-symmetric system in quantum computer. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_1906_05073 |
| institution | arXiv |
| publishDate | 2019 |
| record_format | arxiv |
| spellingShingle | Experimental observation of information flow in the anti-$\mathcal{PT}$-symmetric system Wen, Jingwei Qin, Guoqing Zheng, Chao Wei, Shijie Kong, Xiangyu Xin, Tao Long, Guilu Quantum Physics The recently theoretical and experimental researches related to $\mathcal{PT}$-symmetric system have attracted unprecedented attention because of various novel features and potentials in extending canonical quantum mechanics. However, as the counterpart of $\mathcal{PT}$-symmetry, there are only a few researches on anti-$\mathcal{PT}$-symmetry. Here, we propose an algorithm for simulating the universal anti-$\mathcal{PT}$-symmetric system with quantum circuit. Utilizing the protocols, an oscillation of information flow is observed for the first time in our Nuclear Magnetic Resonance quantum simulator. We will show that information will recover from the environment completely when the anti-$\mathcal{PT}$-symmetry is broken, whereas no information can be retrieved in the symmetry-unbroken phase. Our work opens the gate for practical quantum simulation and experimental investigation of universal anti-$\mathcal{PT}$-symmetric system in quantum computer. |
| title | Experimental observation of information flow in the anti-$\mathcal{PT}$-symmetric system |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/1906.05073 |