Affiliation:
1. Department of Electrical Engineering, Pohang University of Science and Technology (POSTECH) , 37673 Pohang, South Korea
Abstract
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 (HnH). Via fitting the cavity-transmission spectrum, the eigenvalues of HnH 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.
Funder
BK21 Four program and Educational Institute for Intelligent Information Integration
National Research Foundation of Korea
Institute for Information and Communications Technology Promotion
Samsung Science and Technology Foundation
Samsung Electronics Co.,Ltd
Subject
Physics and Astronomy (miscellaneous)
Cited by
1 articles.
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1. PT
-symmetric quantum Rabi model;Physical Review A;2023-11-15