Chinese Optics, Volume. 17, Issue 6, 1467(2024)
Witnessing quantum phase transition in a non-Hermitian trapped ion system via quantum Fisher information
Fig. 1. The two levels of the ion system with balanced gain and loss
Fig. 2. The dynamics of QFI is plotted as a function of the ratio in the condition of . (a) The contour plot; (b) the oscillation illustrated in the PT symmetry unbroken region of ; (c) the decaying behavior in the broken phase of
Fig. 3. The contour plot of QFI is illustrated at a short time interval.
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Yu-Hao LIN, Kai YAN, Jia TAN, Zhao-Liang CAO, Xiang HAO. Witnessing quantum phase transition in a non-Hermitian trapped ion system via quantum Fisher information[J]. Chinese Optics, 2024, 17(6): 1467
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Received: Jun. 11, 2024
Accepted: Jul. 15, 2024
Published Online: Jan. 14, 2025
The Author Email: Xiang HAO (xhao@mail.usts.edu.cn)
