630 papers
The subatomic world is a realm where matter behaves in ways that defy our everyday intuition, and this category explores the fundamental building blocks of our universe. From the intricate dance of quarks inside a proton to the strange properties of electrons, these studies reveal the deep rules that govern everything from the smallest particles to the largest stars.
At Gist.Science, we track every new preprint in this field as it appears on arXiv, ensuring you stay ahead of the curve. For each discovery, we provide both a clear, plain-language explanation of the core ideas and a detailed technical summary for those who want to dive deeper into the mathematics and methodology.
Below are the latest papers in Atom-Ph, offering fresh insights into the structure and behavior of the atomic scale.
This paper demonstrates entanglement-enhanced optical magnetometry that surpasses the standard quantum limit across a broad range of acoustic frequencies by utilizing a bipartite entangled light state, variational readout, and signal conditioning to engineer correlations between measurement imprecision and quantum backaction.
This paper reviews the charge-state dynamics of barium ions in high-pressure xenon and identifies three-body recombination as a physically plausible mechanism for converting Ba to Ba on millisecond timescales, highlighting the critical need to treat the barium charge state as a dynamical quantity for the successful implementation of barium-tagging in neutrinoless double-beta decay searches.
This paper demonstrates a compact, metal-free quantum sensor using cold Rydberg atoms in a super-molasses trap to achieve high-resolution, self-calibrated radiofrequency field measurements with a wide dynamic range and minimal electromagnetic perturbation.
The authors report the experimental observation and characterization of weakly-bound -symmetry ultralong-range Rydberg molecules in rubidium-87, identifying their unique magnetic sublevel structure and binding energy scaling while noting the limits of the Fermi pseudopotential approach at low principal quantum numbers.
This paper demonstrates that while the complex inter-channel ratio (combining phase and amplitude) is the statistically optimal observable for extracting the nucleon-coupling ratio in a dual-alkali comagnetometer, the phase difference alone remains the most robust calibration-free choice because it avoids the stringent gain-stability requirements needed to utilize the amplitude information at lower frequencies.
The authors report the creation of an ultracold gas of bosonic KCs Feshbach molecules via sympathetic cooling and magnetoassociation at 361.7 G, characterizing new interspecies resonances and refining interaction potentials to pave the way for producing ground-state molecules.
This paper experimentally demonstrates high-fidelity four- and six-photon stimulated Raman transitions between electronic angular momentum states in a single trapped atom, offering a scalable method for efficient control of qudits and logical qubits by utilizing multiple energy levels to overcome resource constraints.
This paper revises the theoretical analysis of line profile asymmetry in hydrogen's transition, demonstrating that this asymmetry causes a frequency shift consistent with modern experimental error budgets and necessitating adjustments to the standard measurement models.
The authors report the observation of large, temperature-dependent anomalous shifts in potassium-39 Feshbach resonances within an optical dipole trap, attributing these shifts to unexpectedly high dynamic polarizabilities of the Feshbach molecules caused by a near-resonance between the trap laser frequency and a specific molecular transition.
This paper identifies stray electric fields caused by trapped charges in glass vacuum cell coatings as a critical issue for Rydberg atom quantum processors and proposes a novel compensation method using photo-ionization of a cold atomic ensemble to effectively neutralize these fields and improve system performance.