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. 2025 Sep 24;16:8359. doi: 10.1038/s41467-025-62047-8

Table 2.

Extracted one-mode model parameters found by fitting the measured transition frequencies at θext = 0, π (Fig. 5) to the effective one-mode Hamiltonian in Eq. (4)

θext Ω/2π EJ1/h EJ2/h φzpf 2φzpf
0 2.95 5.31 0.658 1.67 3.34
π 2.86 0.27 0.795 1.70 3.40

All energy scales are given in gigahertz.