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Experimental Proposal on Non-Hermitian Skin Effect by Two-dimensional Quantum Walk with a Single Trapped Ion
被引:2
|作者:
Hou, Waner
[1
,2
]
Tang, Hao
[1
,2
]
Xu, Qin
[1
,2
]
Lin, Yiheng
[1
,2
,3
]
机构:
[1] Univ Sci & Technol China, CAS Key Lab Microscale Magnet Resonance, Hefei 230026, Peoples R China
[2] Univ Sci & Technol China, Sch Phys Sci, Hefei 230026, Peoples R China
[3] Univ Sci & Technol China, Hefei Natl Lab, Hefei 230088, Peoples R China
基金:
中国国家自然科学基金;
关键词:
DYNAMICS;
STATE;
D O I:
10.1088/0256-307X/41/4/040301
中图分类号:
O4 [物理学];
学科分类号:
0702 ;
摘要:
Non-Hermitian Hamiltonians are widely used in describing open systems with gain and loss, among which a key phenomenon is the non-Hermitian skin effect. Here we report an experimental scheme to realize a two-dimensional (2D) discrete-time quantum walk with non-Hermitian skin effect in a single trapped ion. It is shown that the coin and 2D walker states can be labeled in the spin of the ion and the coherent-state lattice of the ion motion, respectively. We numerically observe a directional bulk flow, whose orientations are controlled by dissipative parameters, showing the emergence of the non-Hermitian skin effect. We then discuss an experimental implementation of our scheme in a laser-controlled trapped Ca+ ion. Our experimental proposal may be applicable to research of dissipative quantum walk systems and may be able to generalize to other platforms, such as superconducting circuits and atoms in cavity.
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页数:6
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