Посилання:Resonant effects in the strongly driven phase-biased
Cooper-pair box / S.N. Shevchenko, A.N. Omelyanchouk // Физика низких температур. — 2006. — Т. 32, № 10. — С. 1282–1285. — Бібліогр.: 30 назв. — англ.
Підтримка:We thank the authors of Ref. 24 for communication
of their experimental results prior to the publication
and E. Il’ichev, W. Krech, and V.I. Shnyrkov for
fruitful discussions. The authors acknowledge the
grant «Nanosystems, nanomaterials, and nanotechnology»
of the National Academy of Sciences of
Ukraine. The work of S.N.S. was partly supported by
grant of President of Ukraine (No. GP/P11/13).
We study the time-averaged upper level occupation probability in a strongly driven two-level
system, particularly its dependence on the driving amplitude x₀ and frequency ω and the energy
level separation ∆E. In contrast to the case of weak driving (x₀ ≪ ∆E), when the positions of the
resonances almost do not depend on x₀, in the case of the strong driving (x₀ ~ ∆E) their positions
are strongly amplitude dependent. We study these resonances in the concrete system — the
strongly driven phase-biased Cooper-pair box, which is considered to be weakly coupled to the
tank circuit.