[HTML][HTML] Feebly-interacting particles: FIPs 2022 workshop report

C Antel, M Battaglieri, J Beacham, C Boehm… - The European Physical …, 2023 - Springer
Particle physics today faces the challenge of explaining the mystery of dark matter, the origin
of matter over anti-matter in the Universe, the origin of the neutrino masses, the apparent …

[HTML][HTML] Feebly-interacting particles: FIPs 2020 workshop report

P Agrawal, M Bauer, J Beacham, A Berlin… - The European Physical …, 2021 - Springer
With the establishment and maturation of the experimental programs searching for new
physics with sizeable couplings at the LHC, there is an increasing interest in the broader …

Resolving the gravitational redshift across a millimetre-scale atomic sample

T Bothwell, CJ Kennedy, A Aeppli, D Kedar… - Nature, 2022 - nature.com
Einstein's theory of general relativity states that clocks at different gravitational potentials tick
at different rates relative to lab coordinates—an effect known as the gravitational redshift. As …

Realizing spin squeezing with Rydberg interactions in an optical clock

WJ Eckner, N Darkwah Oppong, A Cao, AW Young… - Nature, 2023 - nature.com
Neutral-atom arrays trapped in optical potentials are a powerful platform for studying
quantum physics, combining precise single-particle control and detection with a range of …

Frequency ratio measurements at 18-digit accuracy using an optical clock network

Nature, 2021 - nature.com
Atomic clocks are vital in a wide array of technologies and experiments, including tests of
fundamental physics. Clocks operating at optical frequencies have now demonstrated …

Improved limits on the coupling of ultralight bosonic dark matter to photons from optical atomic clock comparisons

M Filzinger, S Dörscher, R Lange, J Klose, M Steinel… - Physical Review Letters, 2023 - APS
We present improved constraints on the coupling of ultralight bosonic dark matter to photons
based on long-term measurements of two optical frequency ratios. In these optical clock …

Direct comparison of two spin-squeezed optical clock ensembles at the 10−17 level

JM Robinson, M Miklos, YM Tso, CJ Kennedy… - Nature Physics, 2024 - nature.com
Building scalable quantum systems that demonstrate performance enhancement based on
entanglement is a major goal in quantum computing and metrology. The main challenge …

Differential clock comparisons with a multiplexed optical lattice clock

X Zheng, J Dolde, V Lochab, BN Merriman, H Li… - Nature, 2022 - nature.com
Rapid progress in optical atomic clock performance has advanced the frontiers of
timekeeping, metrology and quantum science,–. Despite considerable efforts, the …

Search for ultralight dark matter from long-term frequency comparisons of optical and microwave atomic clocks

T Kobayashi, A Takamizawa, D Akamatsu… - Physical Review Letters, 2022 - APS
We search for ultralight scalar dark matter candidates that induce oscillations of the fine
structure constant, the electron and quark masses, and the quantum chromodynamics …

New horizons: Scalar and vector ultralight dark matter

D Antypas, A Banerjee, C Bartram… - arXiv preprint arXiv …, 2022 - arxiv.org
The last decade has seen unprecedented effort in dark matter model building at all mass
scales coupled with the design of numerous new detection strategies. Transformative …