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 proposes a high-fidelity, tunable controlled-phase gate for optically trapped polar molecules that achieves resilience against dipole-dipole interaction fluctuations by utilizing global microwave pulses and single-qubit gates without populating coupled states, enabling fidelities exceeding 0.9999 under typical experimental conditions.
The paper proposes Granularity Noise Thermometry (GNT), a fluctuation-based optical scheme that determines temperature by measuring the linear scaling of excess noise in transmitted light with the photon-to-atom ratio, yielding distinct temperature dependencies for thermal vapors and cold atomic ensembles.
This paper proposes and experimentally demonstrates a "squeezing-induced stochastic resonance" method in a trapped ion system that amplifies weak electric-field signals by converting squeezed phase noise into amplitude fluctuations, achieving a 4.28 dB signal-to-noise ratio improvement over conventional noise-induced stochastic resonance without requiring an auxiliary noise source.
This paper presents a novel analytical framework for efficiently evaluating one- and two-center matrix elements of the free-particle Green's function over spherical and plane-wave-modulated Gaussian basis functions, providing compact closed-form expressions and recurrence relations essential for describing electron scattering and autoionization processes.
This paper demonstrates that a pulsed terahertz field can rapidly switch the strength of interactions between Rydberg atoms by three orders of magnitude, overcoming the limitations of microwave fields and offering significant advantages for applications in quantum computing and Rydberg quantum optics.
This paper numerically characterizes the emergence of distinct dynamical regimes in finite-temperature atomic Josephson junctions, revealing how dissipation mechanisms transition from damped plasma oscillations to vortex- and sound-induced effects based on initial chemical potential differences and the ratio of thermal energy to barrier amplitude.
This paper proposes a significantly enhanced detection scheme for meV-scale QCD axions and dark photons using highly excited cyclotron states of a trapped electron within an open-endcap trap, achieving background-free sensitivity to the predicted post-inflationary QCD axion mass range (0.1–2.3 meV) and dark photon kinetic mixing parameters as low as through optimized experimental parameters and dielectric-enhanced cavities.
This paper proposes a method for detecting high-frequency gravitational waves (10 kHz–10 MHz) using two-dimensional ion crystals, where resonant excitation of parity-odd drumhead modes is transferred to collective spin rotation via optical dipole forces to generate squeezed spin states that surpass the standard quantum limit, with sensitivity scaling favorably with crystal size and ion number.
This study combines spectroscopy and diatomic-in-molecule simulations to reveal that cesium atoms in cryogenic argon matrices occupy multiple trapping sites with distinct symmetries, leading to complex fluorescence, large Stokes shifts, and significant host-guest lattice reorganization.
This paper investigates the role of retardation in the thermal radiation energy shift of Rydberg atoms, demonstrating that at temperatures exceeding a specific characteristic threshold, non-dipole multipole contributions dominate the electric-dipole shift and that the electric-quadrupole shift is comparable in magnitude to the diamagnetic shift.