728 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 presents a theoretical proposal and experimental demonstration of a cryogenically compatible, on-demand microwave-optical quantum transducer based on a Rydberg ensemble that achieves high storage efficiency and low noise by leveraging cascaded electromagnetically induced transparency to store and retrieve microwave photons as optical photons without requiring optical cavities.
This paper presents a comprehensive architectural blueprint for using light, metastable helium-3 atoms in programmable optical tweezer arrays to overcome inertia limitations, enabling significantly faster atomic transport and hopping, novel qubit manipulation in trap potentials, and enhanced resource efficiency for fermionic quantum simulation and computation.
This paper presents a comprehensive theoretical framework combining multichannel quantum-defect theory and matrix diagonalization to calculate and compare the fine and hyperfine structures of high- Rydberg-Stark manifolds in H and D, revealing that while hyperfine interactions primarily induce uniform Fermi-contact splitting, molecular rotation coupled with core interactions generates Stark-state-specific splittings that significantly alter the spectral structure.
This paper reports the successful laser cooling and trapping of Ra ions, presents precise measurements of hyperfine splittings and Zeeman coefficients for key electronic states that resolve previous literature discrepancies, and demonstrates high-fidelity state preparation and measurement suitable for optical clocks and quantum information applications.
This paper reports a precision measurement of the -factor ratio between the and states of a single trapped ion using two distinct apparatuses (a cryogenic surface electrode Paul trap and a room-temperature Penning trap), achieving a more than 40-fold reduction in uncertainty compared to previous work.
This study employs state-of-the-art *ab initio* methods to successfully simulate Cu K-shell transitions and their satellite intensity evolution near the ionization threshold, demonstrating good agreement with experimental data and identifying resonant 1s3d and 1s4p excitations as the origin of below-threshold satellite intensity in Cu(I) and Cu(II) oxide phases.
This paper extends quantum linear solvers to multi-reference coupled cluster methods for strongly correlated systems, demonstrating through multiple diagnostics that the condition number scales polylogarithmically with system size, thereby supporting the prospect of exponential quantum advantage while achieving high accuracy in numerical benchmarks.
This paper demonstrates a universal, resource-efficient method for eliminating detrimental stray electric fields in Rydberg-atom tweezer arrays by using photo-ionized laser-cooled atoms to generate an in-vacuum plasma, thereby restoring stable and coherent excitation of individual Rydberg states.
This study demonstrates that for ultrashort electromagnetic pulses, the sequential single-electron approximation for double ionization of negative bromine ions breaks down, with electron-electron repulsion suppressing the ionization rate by an order of magnitude and enabling a counter-intuitive collective tunneling channel.
This paper theoretically demonstrates that periodically twisting a two-dimensional Aubry-André model induces a spatially varying multi-frequency drive that generates ring-shaped localized states with non-trivial topological signatures, shifting the focus from incommensurability to dynamical localization and hybridization.