Analytic estimation of transition between instantaneous eigenstates of quantum two-level system

Takayuki Suzuki, Hiromichi Nakazato*, Roberto Grimaudo, Antonino Messina

*Corresponding author for this work

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10 Citations (Scopus)


Transition amplitudes between instantaneous eigenstates of a quantum two-level system are evaluated analytically on the basis of a new parametrization of its evolution operator, which has recently been proposed to construct exact solutions. In particular, the condition under which the transitions are suppressed is examined analytically. It is shown that the analytic expression of the transition amplitude enables us, not only to confirm the adiabatic theorem, but also to derive the necessary and sufficient condition for quantum two-level system to remain in one of the instantaneous eigenstates.

Original languageEnglish
Article number17433
JournalScientific reports
Issue number1
Publication statusPublished - 2018 Dec 1

ASJC Scopus subject areas

  • General

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