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Nonlinear parametric generation and optical vortex transfer in graphene ensemble under Landau quantization.

Ali Mehdinejad1

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This study demonstrates parametric light generation in Landau-quantized graphene using two laser pulses. Manipulating system parameters controls beam intensity, reduces absorption, and enables optical vortex transfer for quantum information processing.

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GrapheneLight propagationOptical vortexParametric generation

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Area of Science:

  • Quantum optics
  • Condensed matter physics
  • Nonlinear optics

Background:

  • Graphene exhibits unique electronic properties due to Landau quantization.
  • Nonlinear parametric processes are crucial for generating new light frequencies and manipulating light beams.
  • Understanding light-matter interactions in structured materials is key for advanced optical applications.

Purpose of the Study:

  • To investigate nonlinear parametric generation and light beam propagation in a Landau-quantized graphene system.
  • To explore the influence of system parameters on generated beam efficiency and beam propagation dynamics.
  • To demonstrate the transfer of optical vortices within the graphene structure.

Main Methods:

  • Utilized Maxwell-Bloch equations to model the dynamics.
  • Employed a three-energy-level Landau-quantized graphene model.
  • Applied two laser pulses to induce and control parametric generation.

Main Results:

  • Achieved parametric generation of a new laser beam in a different transition.
  • Demonstrated control over propagated beam intensity oscillations and absorption losses.
  • Showcased enhancement of energy transfer efficiency from the initial to the generated beam.
  • Successfully transferred optical vortices by introducing one to the initial beam.

Conclusions:

  • System parameters can be manipulated to optimize parametric light generation and propagation in graphene.
  • The demonstrated scheme offers a promising route for high-dimensional quantum information processing applications.
  • Graphene's unique properties enable novel light manipulation and generation techniques.