Solid-state pulsed microwave emitter based on Rydberg excitons.

Area of Science:

• Solid-state physics
• Quantum optics
• Materials science

Background:

• Maser technology traditionally relies on gas-phase systems.
• Solid-state masers offer potential for miniaturization and integration.
• Cuprous oxide (Cu2O) is an emerging material with unique electronic properties.

Purpose of the Study:

• To theoretically demonstrate the feasibility of using cuprous oxide (Cu2O) as a gain medium in a solid-state maser.
• To investigate population inversion and maser emission via Rydberg states in Cu2O.
• To analyze the complex dynamics of the excitonic system under maser conditions.

Main Methods:

• Theoretical modeling of radiative microwave transitions between Rydberg states in Cu2O.
• Numerical simulations of pulsed emission dynamics.
• Inclusion of strong Stark shifts and Rydberg blockade effects in the simulations.

Main Results:

• Demonstrated population inversion and maser emission across a broad wavelength range in Cu2O.
• Revealed intricate and rich dynamics in the pulsed emission regime.
• Quantified the impact of Stark shifts and Rydberg blockade on maser performance.

Conclusions:

• Cuprous oxide is a promising candidate for solid-state maser applications.
• Rydberg states offer a viable pathway for achieving maser action in Cu2O.
• The study provides a theoretical foundation for designing Cu2O-based maser devices.