Dynamical Autler-Townes control of a phase qubit

Published

September 10, 2012

Author(s)

Jian Li, G.S. Paraoanu, Katarina Cicak, Fabio Altomare, Jae Park, Raymond Simmonds, Mika A. Sillanpaa, Pertti Hakonen

Abstract

We present an experimental demonstration of a phase qubit acting as an on/o® switch for the absorbtion of photons in a probe microwave beam. The switch is controlled by a second control microwave ¯eld. The on/o® states of the qubit are steady states which for suitable values of the control ¯eld can be close enough to dark states. The functioning of the device is based on the Autler-Townes e®ect. A full numerical model up to the ¯fth energy level, including independently- determined parameters for relaxation, dephasing, and cross-couplings, gives excellent agreement with the experiment and allows us to characterize the time-scale for switching.

Citation

Applied Physics Letters

Volume

2

Issue

645

Pub Type

Journals

Download Paper

https://doi.org/10.1038/srep00645

Local Download

Keywords

superconducting, qubits

Citation

Li, J. , Paraoanu, G. , Cicak, K. , Altomare, F. , Park, J. , Simmonds, R. , Sillanpaa, M. and Hakonen, P. (2012), Dynamical Autler-Townes control of a phase qubit, Applied Physics Letters, [online], https://doi.org/10.1038/srep00645, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=908082 (Accessed October 12, 2025)