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2023-01-16T04:13:34Z
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Transition probability generating function of a transitionless quantum parametric oscillator
Mishima, Hiroaki
73748
Izumida, Yuki
73749
The transitionless tracking (TT) algorithm enables the exact tracking of quantum adiabatic dynamics in an arbitrary short time by adding a counterdiabatic Hamiltonian to the original adiabatic Hamiltonian. By applying Husimi's method originally developed for a quantum parametric oscillator (QPO) to the transitionless QPO achieved using the TT algorithm, we obtain the transition probability generating function with a time-dependent parameter constituted with solutions of the corresponding classical parametric oscillator (CPO). By obtaining the explicit solutions of this CPO using the phase-amplitude method, we find that the time-dependent parameter can be reduced to the frequency ratio between the Hamiltonians without and with the counterdiabatic Hamiltonian, from which we can easily characterize the result achieved by the TT algorithm. We illustrate our theory by showing the trajectories of the CPO on the classical phase space, which elucidate the effect of the counterdiabatic Hamiltonian of the QPO.
journal article
American Physical Society
2017-07-17
application/pdf
Physical Review E
1
96
012133
012133
http://doi.org/10.1103/PhysRevE.96.012133
http://hdl.handle.net/2237/27023
2470-0045
https://nagoya.repo.nii.ac.jp/record/24801/files/PhysRevE_96_012133.pdf
eng
https://doi.org/10.1103/PhysRevE.96.012133
© 2017 American Physical Society