Achieving high energy resolution in spin systems is important for fundamental physics
research and precision measurements, with alkali-noble-gas comagnetometers being …

Ultralight axion-like particles are well-motivated dark matter candidates introduced by
theories beyond the standard model of particle physics. However, directly constraining their …

Novel interactions beyond the four known fundamental forces in nature (electromagnetic,
gravitational, strong and weak interactions), may arise due to" new physics" beyond the …

Experimental searches for exotic spin-dependent forces are attracting a lot of attention
because they allow to test theoretical extensions to the standard model. Here, we report an …

Atomic magnetometers operated in spin-exchange relaxation-free (SERF) have the potential
to replace superconducting quantum interference devices (SQUIDs) in the field of …

Typical weak signal search experiments rely on resonant effects, where the resonance
frequency is scanned over a broad range, resulting in significant time consumption. In this …

Development of new techniques to search for particles beyond the standard model is crucial
for understanding the ultraviolet completion of particle physics. Several hypothetical …

We report new experimental results on exotic spin-spin-velocity-dependent interactions
between electron spins. We designed an elaborate setup that is equipped with two nitrogen …

Accurate and fast measurement of the spin polarizability of alkali-metal and noble-gas atoms
in co-magnetometer is essential to improve the sensitivity of ultra-sensitive inertial …

Exotic spin-dependent interactions involving new light particles address key questions in
modern physics. Interactions between polarized neutrons (n) and unpolarized nucleons (N) …