Thermodynamics and State Preparation in a Two-State System of Light

Area of Science:

• Quantum physics
• Thermodynamics
• Quantum optics

Background:

• Coupling quantum systems to thermal environments is crucial for quantum technologies.
• Understanding boson thermodynamics in two-level systems has broad applications.

Purpose of the Study:

• Investigate the thermodynamics of N bosons in a two-level system coupled to a heat bath.
• Demonstrate thermalization and coherent manipulation of photons in a microcavity.

Main Methods:

• Utilized an optical dye microcavity platform.
• Experimentally thermalized photons in a two-mode system with tunable chemical potential.
• Applied pulsed and stationary excitation conditions.

Main Results:

• Observed Josephson oscillations under pulsed excitation, confirming coherent manipulation.
• Demonstrated thermalization of the two-mode system under stationary conditions.
• Showcased mode occupation distributions consistent with Boltzmann and quantum statistics at varying boson populations.

Conclusions:

• The study validates the statistical mechanics of N bosons in a two-level system.
• Experimental results align with theoretical predictions for thermalization and quantum statistics.
• The platform shows promise for quantum state preparation and quantum thermodynamics research.