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Special Issue:
SPECIAL TOPIC — Non-Hermitian physics
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| SPECIAL TOPIC—Non-Hermitian physics |
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Disorder in parity-time symmetric quantum walks |
| Peng Xue(薛鹏)† |
| Beijing Computational Science Research Center, Beijing 100084, China |
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Abstract We experimentally investigate the impact of static disorder and dynamic disorder on the non-unitary dynamics of parity-time (PT)-symmetric quantum walks. Via temporally alternating photon losses in an interferometric network, we realize the passive PT-symmetric quantum dynamics for single photons. Controllable coin operations allow us to simulate different environmental influences, which result in three different behaviors of quantum walkers: a standard ballistic spread, a diffusive behavior, and a localization, respectively, in a PT-symmetric quantum walk architecture.
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Received: 02 October 2021
Revised: 04 November 2021
Accepted manuscript online: 06 November 2021
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PACS:
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03.67.Lx
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(Quantum computation architectures and implementations)
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03.67.Hk
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(Quantum communication)
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05.40.Fb
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(Random walks and Levy flights)
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05.45.Mt
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(Quantum chaos; semiclassical methods)
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| Fund: This work was supported by the National Natural Science Foundation of China (Grant Nos. 12025401 and U1930402). |
Corresponding Authors:
Peng Xue
E-mail: genp.eux@gmail.com
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Cite this article:
Peng Xue(薛鹏) Disorder in parity-time symmetric quantum walks 2022 Chin. Phys. B 31 010311
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