期刊
NPJ QUANTUM INFORMATION
卷 6, 期 1, 页码 -出版社
NATURE RESEARCH
DOI: 10.1038/s41534-020-0258-4
关键词
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类别
资金
- National Key RAMP
- D Program of China [2017YFA0303700]
- Key RAMP
- D Program of Guangdong province [2018B030325002]
- Beijing Advanced Innovation Center for Future Chip (ICFC)
- National Natural Science Foundation of China [11905099, U1801661, 11774197, 11705004]
- Open Research Fund Program of the State Key Laboratory of Low-Dimensional Quantum Physics [KF201710]
- Guangdong Basic and Applied Basic Research Foundation [2019A1515011383]
The recently theoretical and experimental researches on PT-symmetric system have attracted unprecedented attention because of the various interesting features and potential applications in extending canonical quantum mechanics. However, as the counterpart of PT-symmetry, there are few experimental researches on the anti-PT-symmetric quantum system because of the challenges in simulating anti-PT-symmetry in experiment. Here, we propose an algorithm for simulating the generalized anti-PT-symmetric system in the quantum circuit model. Utilizing the algorithm, we demonstrated the quantum simulation of anti-PT system experimentally, and an oscillation of information flow is observed in a nuclear magnetic resonance quantum simulator. The experiment showed that the information could recover from the environment completely when the anti-PT-symmetry is broken, whereas no information can be retrieved in the symmetry-unbroken phase. Our work opens the gate for the practical quantum simulation and experimental investigation of universal anti-PT-symmetric system in a quantum computer.
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