Suppression of multiphoton resonances in driven quantum systems via pulse shape optimization
Quantum Physics
2017-08-07 v2 Mesoscale and Nanoscale Physics
Atomic Physics
Computational Physics
Abstract
This Letter demonstrates control over multiphoton absorption processes in driven two-level systems, which include for example superconducting qubits or laser-irradiated graphene, through spectral shaping of the driving pulse. Starting from calculations based on Floquet theory, we use differential evolution, a general purpose optimization algorithm, to find the Fourier coefficients of the driving function that suppress a given multiphoton resonance in the strong field-regime. We show that the suppression of the transition probability is due to the coherent superposition of high-order Fourier harmonics which closes the dynamical gap between the Floquet states of the two-level system.
Cite
@article{arxiv.1703.04165,
title = {Suppression of multiphoton resonances in driven quantum systems via pulse shape optimization},
author = {Denis Gagnon and François Fillion-Gourdeau and Joey Dumont and Catherine Lefebvre and Steve MacLean},
journal= {arXiv preprint arXiv:1703.04165},
year = {2017}
}