Work

Designing adiabatic time evolution from high-frequency bichromatic sources

Year: 2020

Type: article

Abstract: We investigate the quantum dynamics of a two-level system driven by a bichromatic field, using a nonperturbative analysis.We make special emphasis in the case of two large frequencies, where the Magnus expansion can fail, and in the case of a large and a small frequency, where resonances can dominate.In the first case, we show that two large frequencies can be combined to produce an effective adiabatic evolution.In the second case, we show that high-frequency terms (which naturally arise as corrections to the adiabatic evolution obtained in the first case) can be used to produce a highly tunable adiabatic evolution over the whole Bloch sphere, controlled by multiphoton resonances.

Source: Physical Review Research

DOI: 10.1103/physrevresearch.2.033412

Authors: Álvaro Gómez-León, Gloria Platero

Institutions: Consejo Superior de Investigaciones Científicas, Instituto de Ciencia de Materiales de Madrid

Language: English

Topic: Laser-Matter Interactions and Applications

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,625

Funder: Ministerio de Economía y Competitividad