An ensemble of atoms can operate as a quantum sensor by placing atoms in a
superposition of two different states. Upon measurement of the sensor, each atom is …

If gravitational perturbations are quantized into gravitons in analogy with the electromagnetic
field and photons, the resulting graviton interactions should lead to an entangling interaction …

Gravitational waves (GWs) were observed for the first time in 2015, one century after
Einstein predicted their existence. There is now growing interest to extend the detection …

Floquet engineering offers a compelling approach for designing the time evolution of
periodically driven systems. We implement a periodic atom-light coupling to realize Floquet …

Inertial sensors based on cold atoms have great potential for navigation, geodesy, or
fundamental physics. Similar to the Sagnac effect, their sensitivity increases with the space …

Compared to light interferometers, the flux in cold-atom interferometers is low and the
associated shot noise is large. Sensitivities beyond these limitations require the preparation …

We present the theoretical design and experimental implementation of mirror and
beamsplitter pulses that improve the fidelity of atom interferometry and increase its tolerance …

Dipole spin-wave states of atomic ensembles with wave vector k (ω) mismatched from the
dispersion relation of light are difficult to access by far-field excitation but may support rich …

We report here on the realization of light-pulse atom interferometers with large-momentum-
transfer atom optics based on a sequence of Bragg transitions. We demonstrate momentum …

This document presents a summary of the 2023 Terrestrial Very-Long-Baseline Atom
Interferometry Workshop hosted by CERN. The workshop brought together experts from …