Oscillations in superradiance with long-duration pumping pulses

Area of Science:

• Quantum optics
• Laser physics
• Nonlinear optics

Background:

• Superradiance is a quantum optical phenomenon where emitters release photons cooperatively.
• Traditional superradiance typically involves short excitation pulses.
• Understanding superradiance dynamics under different excitation conditions is crucial for quantum technologies.

Purpose of the Study:

• To experimentally investigate a novel superradiance regime.
• To characterize superradiance dynamics under long-duration pumping pulses.
• To provide theoretical interpretations for the observed phenomena.

Main Methods:

• Experimental generation of superradiance using long-duration pumping pulses.
• Qualitative analysis employing the mean-field approximation and broadband excitation.
• Quantitative analysis incorporating propagation effects and monochromatic excitation.

Main Results:

• Observation of a new superradiance regime characterized by relaxation oscillations.
• Successful qualitative interpretation using mean-field theory with broadband excitation.
• Detailed quantitative interpretation considering propagation effects and monochromatic excitation.

Conclusions:

• Long-duration pumping pulses lead to a distinct superradiance regime with observable relaxation oscillations.
• The mean-field approximation and propagation effects provide a robust framework for understanding this new regime.
• This study expands the understanding of superradiance dynamics and its control.