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Updated: Jan 20, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Quantum Interference Control of Photocurrents in Semiconductors by Nonlinear Optical Absorption Processes.

Kai Wang1, Rodrigo A Muniz2, J E Sipe2

  • 1Physics Department, University of Michigan, Ann Arbor, Michigan 48109, USA.

Physical Review Letters
|September 7, 2019
PubMed
Summary

This study demonstrates quantum interference control in semiconductors using two nonlinear optical absorption processes. Researchers observed injection current modulation by tuning the intensities and phases of incident light fields.

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Area of Science:

  • Quantum optics
  • Semiconductor physics
  • Nonlinear optics

Background:

  • Nonlinear optical absorption is crucial for semiconductor device applications.
  • Quantum interference offers novel pathways for controlling light-matter interactions.

Purpose of the Study:

  • To demonstrate quantum interference control in semiconductors.
  • To investigate the interplay between two-photon and three-photon absorption processes.

Main Methods:

  • Utilizing two optical beams with frequencies ω and 3ω/2.
  • Incident light on Aluminum Gallium Arsenide (AlGaAs) semiconductor.
  • Measuring injection current generated by interfering absorption processes.

Main Results:

  • Observed quantum interference between two- and three-photon absorption.
  • Demonstrated control over injection current via optical field manipulation.
  • Analyzed the dependence of current on light intensities and phases.

Conclusions:

  • Quantum interference provides a mechanism for controlling nonlinear optical absorption in semiconductors.
  • This control can be leveraged for advanced optical devices.
  • Further research can explore tailored semiconductor absorption properties.