Decoherence, Autler-Townes effect, and dark states in two-tone driving of a three-level superconducting system
Jian Li, G.S. Paraoanu, Katarina Cicak, Fabio Altomare, Jae Park, Raymond W. Simmonds, Mika A. Sillanpaa, Pertti Hakonen
We present a detailed theoretical and experimental study of a multi-level quantum system coupled to two radiation ¯elds and subject to decoherence. We concentrate on an e®ect known from quantum optics as the Autler-Townes splitting, which has been recently demonstrated experimentally [M. A. SillanpÄaÄa et al., Phys. Rev. Lett. 103, 193601 (2009)] in such a system (a superconducting phase qubit). In the three-level approximation, we derive analytical solutions and show how they can be used to account for the measurement data. In addition, a more complete 5-level model is solved numerically and it is shown to provide excellent agreement with the experiment. Finally, we show that stationary states, with a structure close to ideal dark states, are created in the experiment.
, Paraoanu, G.
, Cicak, K.
, Altomare, F.
, Park, J.
, Simmonds, R.
, Sillanpaa, M.
and Hakonen, P.
Decoherence, Autler-Townes effect, and dark states in two-tone driving of a three-level superconducting system, Physical Review B, [online], https://doi.org/10.1103/PhysRevB.84.104527
(Accessed September 28, 2021)