Quantum simulation of Hawking radiation and curved spacetime with a superconducting on-chip black hole
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arXiv
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| Format: | Preprint |
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2021
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| author | Shi, Yun-Hao Yang, Run-Qiu Xiang, Zhongcheng Ge, Zi-Yong Li, Hao Wang, Yong-Yi Huang, Kaixuan Tian, Ye Song, Xiaohui Zheng, Dongning Xu, Kai Cai, Rong-Gen Fan, Heng |
| author_facet | Shi, Yun-Hao Yang, Run-Qiu Xiang, Zhongcheng Ge, Zi-Yong Li, Hao Wang, Yong-Yi Huang, Kaixuan Tian, Ye Song, Xiaohui Zheng, Dongning Xu, Kai Cai, Rong-Gen Fan, Heng |
| contents | Hawking radiation is one of the quantum features of a black hole that can be understood as a quantum tunneling across the event horizon of the black hole, but it is quite difficult to directly observe the Hawking radiation of an astrophysical black hole. Here, we report a fermionic lattice-model-type realization of an analogue black hole by using a chain of 10 superconducting transmon qubits with interactions mediated by 9 transmon-type tunable couplers. The quantum walks of quasi-particle in the curved spacetime reflect the gravitational effect near the black hole, resulting in the behaviour of stimulated Hawking radiation, which is verified by the state tomography measurement of all 7 qubits outside the horizon. In addition, the dynamics of entanglement in the curved spacetime is directly measured. Our results would stimulate more interests to explore the related features of black holes using the programmable superconducting processor with tunable couplers. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2111_11092 |
| institution | arXiv |
| publishDate | 2021 |
| record_format | arxiv |
| spellingShingle | Quantum simulation of Hawking radiation and curved spacetime with a superconducting on-chip black hole Shi, Yun-Hao Yang, Run-Qiu Xiang, Zhongcheng Ge, Zi-Yong Li, Hao Wang, Yong-Yi Huang, Kaixuan Tian, Ye Song, Xiaohui Zheng, Dongning Xu, Kai Cai, Rong-Gen Fan, Heng Quantum Physics Other Condensed Matter General Relativity and Quantum Cosmology Hawking radiation is one of the quantum features of a black hole that can be understood as a quantum tunneling across the event horizon of the black hole, but it is quite difficult to directly observe the Hawking radiation of an astrophysical black hole. Here, we report a fermionic lattice-model-type realization of an analogue black hole by using a chain of 10 superconducting transmon qubits with interactions mediated by 9 transmon-type tunable couplers. The quantum walks of quasi-particle in the curved spacetime reflect the gravitational effect near the black hole, resulting in the behaviour of stimulated Hawking radiation, which is verified by the state tomography measurement of all 7 qubits outside the horizon. In addition, the dynamics of entanglement in the curved spacetime is directly measured. Our results would stimulate more interests to explore the related features of black holes using the programmable superconducting processor with tunable couplers. |
| title | Quantum simulation of Hawking radiation and curved spacetime with a superconducting on-chip black hole |
| topic | Quantum Physics Other Condensed Matter General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2111.11092 |