Abstract Space-based research can provide a major leap forward in the study of key open
questions in the fundamental physics domain. They include the validity of Einstein's …

Abstract Hong–Ou–Mandel (HOM) interference—the bunching of indistinguishable photons
at a beamsplitter—is a staple of quantum optics and lies at the heart of many quantum …

The deflection of light in the gravitational field of the Sun is one of the most fundamental
consequences for general relativity as well as one of its classical tests first performed by …

Magnetically levitated microparticles have been proposed as mechanical sensors with
extreme sensitivity. In particular, micromagnets levitated above a superconductor can …

Matter-wave interferometers with large momentum transfers, irrespective of specific
implementations, will face a universal dephasing due to relative accelerations between the …

Matter-wave interferometers have fundamental applications for gravity experiments such as
testing the equivalence principle and the quantum nature of gravity. In addition, matter-wave …

Many phenomena and fundamental predictions, ranging from Hawking radiation to the early
evolution of the Universe rely on the interplay between quantum mechanics and gravity or …

Precision interferometry with quantum states has emerged as an essential tool for
experimentally answering fundamental questions in physics. Optical quantum …

Absolute angular rotation rate measurements with sensitivity better than prad/s would be
beneficial for fundamental science investigations. In this regard, large frame Earth based …

Mechanical rotation plays a central role in fundamental physics theories and has profound
connections with the theory of general relativity. However, very few experiments have so far …