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Transmon in a semi-infinite high-impedance transmission line: Appearance of cavity modes and Rabi oscillations

E. Wiegand, B. Rousseaux, G. Johansson

DOI 10.1103/PhysRevResearch.3.023003 · Physical Review Research

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Abstract

In this paper, we investigate the dynamics of a single superconducting artificial atom capacitively coupled to a transmission line with a characteristic impedance comparable to or larger than the quantum resistance. In this regime, microwaves are reflected from the atom also at frequencies far from the atom's transition frequency. Adding a single mirror in the transmission line then creates cavity modes between the atom and the mirror. Investigating the spontaneous emission from the atom, we then find Rabi oscillations, where the energy oscillates between the atom and one of the cavity modes.

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