Tailoring Coherent Microwave Emission from a Solid-State Hybrid System for Room-Temperature Microwave Quantum...

Area of Science:

• Quantum electronics
• Solid-state physics
• Quantum information science

Background:

• Microwave quantum electronics typically require cryogenic conditions.
• Pentacene spin ensembles offer potential for quantum applications.

Purpose of the Study:

• To demonstrate a room-temperature solid-state maser.
• To achieve coherent microwave quantum amplification and oscillation.
• To explore control over the masing process.

Main Methods:

• Utilized a hybrid system of photo-excited pentacene triplet spins coupled to a dielectric resonator.
• Employed external driving and active dissipation control.
• Operated at X band microwave frequencies (≈9.4 GHz).

Main Results:

• Achieved coherent microwave quantum amplification and oscillation at room temperature.
• Demonstrated efficient tuning of maser emission characteristics.
• Successfully controlled the masing process without cryogenic cooling.

Conclusions:

• This work presents the first room-temperature solid-state maser based on pentacene.
• The findings offer a universal route for controlling room-temperature masing.
• Highlights opportunities for quantum information processing and communication devices.