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Quantum ground state of rotation reached in a world-first in Europe
- European researchers trap a silica nanorotor in its quantum ground state, a global first.
- Cooling is accomplished by coherent scattering of trapped nanoparticles into an optical resonator.
- Two-dimensional cooling achieves quantum-limited alignment within 20 microradians.
- The advancement could enable quantum torque sensing using rotating nanoparticles.
- Findings published in Nature Physics highlight implications for quantum technologies.
- 2D cooling allows exploration of rotational quantum interference and interfaces with daily-scale phenomena.
- The method uses 100 MW/cm2 light intensity to trap and cool the rotor.
- Researchers aim to extend techniques toward observing rotational quantum interference at smaller scales.
- The work marks a milestone toward rotational matter interferometry and quantum torque sensing.
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