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arXiv · 1703.04165

Suppression of multiphoton resonances in driven quantum systems via pulse shape optimization

Denis Gagnon·François Fillion-Gourdeau·Joey Dumont·Catherine Lefebvre·Steve MacLean
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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.

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Denis Gagnon, François Fillion-Gourdeau, Joey Dumont, Catherine Lefebvre, Steve MacLean. 2017-03-12. Suppression of multiphoton resonances in driven quantum systems via pulse shape optimization. https://doi.org/10.1103/physrevlett.119.053203

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