Landau-Zener-Stückelberg-Majorana interferometry of a superconducting qubit in front of a mirror

Wen, PY and Ivakhnenko, OV and Nakonechnyi, MA and Suri, B and Lin, JJ and Lin, WJ and Chen, JC and Shevchenko, SN and Nori, F and Hoi, IC (2020) Landau-Zener-Stückelberg-Majorana interferometry of a superconducting qubit in front of a mirror. In: Physical Review B, 102 (7).

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Abstract

We investigate the Landau-Zener-Stückelberg-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. We modulate the resonant frequency of the qubit by applying a sinusoidal flux pump. We perform 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 multiphoton resonances in the dressed qubit. Our calculations agree well with the experiments. © 2020 American Physical Society.

Item Type:	Journal Article
Publication:	Physical Review B
Publisher:	American Physical Society
Additional Information:	Copyright to this article belongs to American Physical Society
Keywords:	Interferometry; Mirrors; Natural frequencies, EM field; Interference patterns; Landau-Zener; Majorana; Multiphoton resonances; Sinusoidal flux; Superconducting qubits, Qubits
Department/Centre:	Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	26 Nov 2020 09:05
Last Modified:	26 Nov 2020 09:05
URI:	http://eprints.iisc.ac.in/id/eprint/66834

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