Third-order exceptional point in an ion-cavity system
| Autor: | Kim, Jinuk, Ha, Taegyu, Kim, Donggeon, Lee, Dowon, Lee, Ki-Se, Won, Jongcheol, Moon, Youngil, Lee, Moonjoo |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Appl. Phys. Lett. 123, 161104 (2023) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1063/5.0168372 |
| Popis: | We investigate a scheme for observing the third-order exceptional point (EP3) in an ion-cavity setting. In the lambda-type level configuration, the ion is driven by a pump field, and the resonator is probed with another weak laser field. We exploit the highly asymmetric branching ratio of an ion's excited state to satisfy the weak-excitation limit, which allows us to construct the non-Hermitian Hamiltonian $(H_{\textrm{nH}})$. Via fitting the cavity-transmission spectrum, the eigenvalues of $H_{\textrm{nH}}$ are obtained. The EP3 appears at a point where the Rabi frequency of the pump laser and the atom-cavity coupling constant balance the loss rates of the system. Feasible experimental parameters are provided. Comment: 9 pages, 6 figures |
| Databáze: | arXiv |
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