4.6 Article

Non-Hermitian skin effect in a single trapped ion

期刊

PHYSICAL REVIEW A
卷 106, 期 6, 页码 -

出版社

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.106.063112

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资金

  1. National Natural Science Foundation of China [92165206, 11974330, 11974331]
  2. Chinese Academy of Sciences [XDC07000000]
  3. Innovation Program for Quantum Science and Technology [2021ZD0301603]
  4. Anhui Initiative in Quantum Information Technologies [AHY050000]
  5. Fundamental Research Funds for the Central Universities
  6. Hefei Comprehensive National Science Center
  7. National Key RD Program [2017YFA0304100]

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This paper proposes a theoretical scheme that significantly impacts the external motion of a single trapped ion through the non-Hermitian skin effect (NHSE) and demonstrates its competition and potential applications.
The non-Hermitian skin effect (NHSE) describes the exponential localization of all eigenstates toward boundaries in non-Hermitian systems, and has attracted intense research interest of late. Here we theoretically propose a scheme in which the NHSE significantly impacts the external motion of a single trapped ion through complex spin-motion dynamics. On the one hand, we show the competition between the NHSE and the coherent Bloch dynamics. On the other hand, since the NHSE manifests as a nonreciprocal flow in occupied phonon modes, we demonstrate that such dynamics can have potential applications in cooling and sensing. Our proposal can be readily implemented using existing experimental techniques and offers a scalable (in terms of the available ions and phonon modes) simulation platform for relevant non-Hermitian physics.

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