Fig. 1 | npj Quantum Information

Fig. 1

From: Superstrong coupling in circuit quantum electrodynamics

Fig. 1

a Optical image of the device, showing (left to right) the coupling antenna, sections of the Josephson transmission line, and the split-junction termination. b Distributed circuit model of the device. The system is probed from the opposite to the split-junction end. c Equivalent circuit model of a semi-infinite transmission line with the wave impedance Z∞ shunting the split-junction. d A lumped element equivalent circuit model of b for a finite-length line

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