Story perspectives

Breakthrough Quantum Engine Achieves Near-Unity Efficiency

10/16/2025

Summary

Story summary

Researchers from Brazil developed a novel thermal engine using cooperative superradiance and superabsorption of two-level atoms, achieving power that scales quadratically with the number of atoms.
The engine operates with a single cold reservoir and cycles of collective pumping and decay.
The team validated the analytical model with numerical simulations, showing efficiencies near unity.
The study shows nonlinear qubits outperform linear qubits in efficiency and power, advancing quantum devices.

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Story summary

Researchers from Brazil developed a novel thermal engine using cooperative superradiance and superabsorption of two-level atoms, achieving power that scales quadratically with the number of atoms.
The engine operates with a single cold reservoir and cycles of collective pumping and decay.
The team validated the analytical model with numerical simulations, showing efficiencies near unity.
The study shows nonlinear qubits outperform linear qubits in efficiency and power, advancing quantum devices.