Quantum decoherence plays a pivotal role in the dynamical description of the quantum-to-
classical transition and is the main impediment to the realization of devices for quantum …

Quantum mechanics is an extremely successful theory that agrees with every experimental
test. However, the principle of linear superposition, a central tenet of the theory, apparently …

Matter-wave interference experiments provide a direct confirmation of the quantum
superposition principle, a hallmark of quantum theory, and thereby constrain possible …

Understanding gravity in the framework of quantum mechanics is one of the great
challenges in modern physics. However, the lack of empirical evidence has lead to a debate …

The Stern-Gerlach effect, found a century ago, has become a paradigm of quantum
mechanics. Unexpectedly, until recently, there has been little evidence that the original …

Over the course of the past decade, decoherence has become a ubiquitous scienti? c term
popular in all kinds of research, from fundamental theories of quantum physics to …

Interference with atomic and molecular matter waves is a rich branch of atomic physics and
quantum optics. It started with atom diffraction from crystal surfaces and the separated …

Recent progress and future prospects of matter-wave interferometry with complex organic
molecules and inorganic clusters are reviewed. Three variants of a near-field interference …

Matter-wave interferometry performed with massive objects elucidates their wave nature and
thus tests the quantum superposition principle at large scales. Whereas standard quantum …

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 …