Quantum Freezing of Rotation: Science Without Cold for a New World

Breakthrough in Quantum Physics

In early August, scientists from ETH Zurich and the Technical University of Vienna achieved a scientific result previously considered impossible – they 'froze' the quantum rotation of a nano-glass sphere at room temperature without the need for extreme cooling.

How the Method Works

Usually, for quantum effects to manifest, particles are cooled almost to absolute zero. However, the new approach allows 'removing' energy from rotational motion using only laser light, while the internal temperature of the particle remains high.

In the experiment, glass nanoparticles with a slightly elliptical shape are placed in a vacuum chamber and balanced by a laser. This way, scientists achieve 92% quantum purity of rotation, while the particle itself remains warm.

Why is it Important?

The method proves that quantum technologies can function without expensive cryogenic systems. This opens doors for their wider application and reduces implementation costs.

Potential for Bulgaria

• Inspiration for young researchers and engineers in quantum physics, optics, and informatics;
• Opportunities to apply the method in navigation and medical technologies – quantum sensors, safe medical equipment, precise diagnostics;
• Integration into European projects for quantum security and measurement systems;

Economic and Social Effects

Technologies working under normal conditions can become accessible and environmentally sustainable. The new method promises more jobs in the scientific and technical sector, as well as faster transfer of innovations from the laboratory to industry.

Conclusion

Quantum freezing of rotation at room temperature is an example of how bold ideas and international scientific collaboration open new horizons for technologies and society. Bulgaria has a chance to be an active participant in this new stage of global science.