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)

From: Spectral signature of high-order photon processes enhanced by Cooper-pair pairing

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

  1. All energy scales are given in gigahertz.
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