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Controlling behaviour of transparency and absorption in three-coupled multiple quantum wells via spontaneously
Rohit Mukherjee1, Rohit Hazra2, Nitu Borgohain3
1Theoretical Photonics Group, Department of Physics, Sarala Birla University, Ranchi, 835103, India. rohitmukherjee670@gmail.com.
Scientific Reports
|April 8, 2024
Summary
Spontaneously generated coherence (SGC) in quantum wells modifies light absorption and propagation. This phenomenon, observed under electromagnetically induced transparency (EIT), offers potential for advanced quantum communications and photonic devices.
Area of Science:
- Quantum Optics
- Solid-State Physics
Background:
- Electromagnetically induced transparency (EIT) enables control over optical properties of atomic and solid-state systems.
- Multiple quantum wells provide a platform for exploring complex light-matter interactions.
Purpose of the Study:
- To investigate the phenomenon of spontaneously generated coherence (SGC) in a three-coupled multiple quantum well system.
- To analyze the impact of SGC on the absorption and dispersion characteristics within the EIT regime.
- To explore potential applications in quantum communications and photonic devices.
Main Methods:
- Theoretical modeling of light-matter interaction in a three-coupled multiple quantum well system.
- Analysis of optical response (absorption and dispersion) under varying control field strengths and detunings.
- Simulation and visualization of absorption and dispersion contours to illustrate SGC effects.
Main Results:
- Spontaneously generated coherence (SGC) significantly modifies the transparency window and dispersive properties.
- Tuning control field strengths and detunings alters absorption and dispersion, with or without SGC.
- Positional shifting of the transparency window and dispersion curves is achievable by manipulating SGC strength and control fields.
Conclusions:
- SGC in multiple quantum wells offers a novel mechanism for tailoring optical responses.
- The demonstrated control over absorption and dispersion opens avenues for advanced photonic device fabrication.
- This research provides a foundation for innovative applications in quantum information processing and optical communications.
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