The superposition principle is the cornerstone of quantum mechanics, leading to a variety of
genuinely quantum effects. Whether the principle applies also to macroscopic systems or …

Rotations of microscale rigid bodies exhibit pronounced quantum phenomena that do not
exist for their centre-of-mass motion. By levitating nanoparticles in ultra-high vacuum …

Quantum technologies are opening novel avenues for applied and fundamental science at
an impressive pace. In this perspective article, we focus on the promises coming from the …

Quantum mechanics, with its revolutionary implications, has posed innumerable problems to
philosophers of science. In particular, it has suggested reconsidering basic concepts such …

Advances in quantum technologies are giving rise to a revolution in the way fundamental
physics questions are explored at the empirical level. At the same time, they are the seeds …

We report an experimental observation of a record-breaking ultrahigh rotation frequency
about 6 GHz in an optically levitated nanoparticle system. We optically trap a nanoparticle in …

Despite the unquestionable empirical success of quantum theory, witnessed by the recent
uprising of quantum technologies, the debate on how to reconcile the theory with the …

We investigate experimentally the dynamics of a nonspherical levitated nanoparticle in a
vacuum. In addition to translation and rotation motion, we observe the light torque-induced …

Levitated nano-oscillators are promising platforms for testing fundamental physics and
quantum mechanics in a new high mass regime. Levitation allows extreme isolation from the …

The continuous spontaneous localization (CSL) model predicts a tiny break of energy
conservation via a weak stochastic force acting on physical systems, which triggers the …