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

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.