Optomechanics is concerned with the use of light to control mechanical objects. As a field, it
has been hugely successful in the production of precise and novel sensors, the …

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 …

We consider two interacting systems when one is treated classically while the other system
remains quantum. Consistent dynamics of this coupling has been shown to exist, and …

We discuss effects of loss of coherence in low energy quantum systems caused by or related
to gravitation, referred to as gravitational decoherence. These effects, resulting from random …

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

Levitated optomechanics, a new experimental physics platform, holds promise for
fundamental science and quantum technological sensing applications. We demonstrate a …

In this paper, we review and connect the three essential conditions needed by the collapse
model to achieve a complete and exact formulation, namely the theoretical, the …

We propose an interferometric scheme based on an untrapped nano-object subjected to
gravity. The motion of the center of mass (cm) of the free object is coupled to its internal spin …

Wave function collapse models postulate a fundamental breakdown of the quantum
superposition principle at the macroscale. Therefore, experimental tests of collapse models …

Spontaneous collapse models predict that a weak force noise acts on any mechanical
system, as a consequence of the collapse of the wave function. Significant upper limits on …