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 proposes and numerically validates a scheme to nearly eliminate motional dephasing in Rydberg polaritons by utilizing velocity memory or phase-correction protocols during storage, thereby enabling robust quantum nonlinear optics applications such as single-photon transistors and deterministic quantum information processing.
This paper establishes a sub-kHz laboratory benchmark for the astrophysically significant 12.2 GHz methanol transition by using optical triangulation of near-infrared rovibrational lines to determine its frequency with 130 Hz absolute uncertainty, thereby enabling more precise tests of fundamental physics regarding the proton-to-electron mass ratio.
This paper presents the first constraints on high-frequency gravitational waves in much of the 100 kHz to 100 MHz range, although parts of this region have been previously probed by the Holometer and bulk acoustic wave devices. By utilizing optical precision spectroscopy to detect the modulation of photon frequencies in laser cavities, this method offers a path toward significantly enhanced sensitivity and an extended detectable frequency range of at least 1 GHz.
This paper proposes a fast, high-fidelity nuclear-spin entangling gate for divalent atoms in large-scale arrays that operates via a single global laser pulse under a weak magnetic field, leveraging strong Rabi frequencies to mitigate Rydberg-state decoherence while ensuring field uniformity.
This review synthesizes theoretical foundations and experimental milestones to explore how Rydberg atoms, with their strong long-range interactions, serve as a versatile platform for quantum simulation and the study of novel many-body phases and non-equilibrium dynamics.
This paper demonstrates that coherently controlled quantum probes offer a strictly superior operational framework for learning many-body systems compared to conventional response theory, as they can access anti-commutator and mixed-order correlators to reveal fluctuations, non-equilibrium structures, and entanglement entropy with resource scaling dependent on correlation complexity rather than system size.
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.