8legs: University of vienna

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#1 out of 297.81%

43m ago

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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#2 out of 2

6h ago

A new study links human-driven climate change to a slower Earth rotation and longer days.
Researchers reconstructed ancient day-length fluctuations using fossil remains of benthic foraminifera.
From 2000 to 2020, days lengthened by 1.33 milliseconds per century due to climate-related factors.
New findings indicate the rapid rise in day length could be unparalleled over the last 3.6 million years.
By century’s end, day length may increase by up to 2.62 milliseconds if warming continues.
The effect on time could influence precision computing systems like GPS and space navigation.
Study uses benthic foraminifera fossils to infer sea-level fluctuations and day-length changes.
The study notes climate-related shifts in day length are slower than the Moon’s influence but still noteworthy.
Editor’s note clarifies author opinions are their own, not Impakter’s.
Findings emphasize climate change’s broad consequences beyond weather, touching time itself.

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