  We investigate the Landau-Zener-Stuckelberg-Majorana interferometry of a
superconducting qubit in a semi-infinite transmission line terminated by a
mirror. The transmon-type qubit is at the node of the resonant electromagnetic
(EM) field, hiding from the EM field. "Mirror, mirror" briefly describes this
system, because the qubit acts as another mirror. We modulate the resonant
frequency of the qubit by applying a sinusoidal flux pump. We probe the
spectroscopy by measuring the reflection coefficient of a weak probe in the
system. Remarkable interference patterns emerge in the spectrum, which can be
interpreted as multi-photon resonances in the dressed qubit. Our calculations
agree well with the experiments.
