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Mirror, mirror: Landau-Zener-Stuckelberg-Majorana interferometry of a superconducting qubit in front of a mirror

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arxiv 2003.00322 v2 pith:HZJY6T7V submitted 2020-02-29 cond-mat.mes-hall quant-ph

Mirror, mirror: Landau-Zener-Stuckelberg-Majorana interferometry of a superconducting qubit in front of a mirror

P. Y. Wen , O. V. Ivakhnenko , M. A. Nakonechnyi , B. Suri , J.-J. Lin , W.-J. Lin , J. C. Chen , S. N. Shevchenko
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Franco Nori I.-C. Hoi
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classification cond-mat.mes-hall quant-ph
keywords mirrorqubitfieldinterferometrylandau-zener-stuckelberg-majoranaproberesonantsuperconducting
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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.

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