429 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 the measurement of entanglement entropy and the observation of a disorder-induced transition from chaotic to localized dynamics in a programmable neutral-atom quantum simulator (QuEra's Aquila) by employing a novel randomised measurement protocol that bypasses the need for local gate control through the combination of local energy tuning and a global field.
This paper presents relativistic many-body calculations of the Landé -factor for lithium-like ions (), demonstrating that negative-energy states provide significant, state-dependent interelectronic-interaction corrections that reach up to 30% of the total contribution for the state at .
The authors present a simple, cost-effective method for generating tunable, phase-locked laser light with sub-Hz relative linewidth by using a laser diode to selectively amplify a single sideband of an electro-optically modulated seed laser.
This paper theoretically demonstrates that a continuous superradiant laser can be achieved by sequentially transporting two ensembles of atoms into a single cavity, showing that atomic synchronization ensures robust, narrow-linewidth emission suitable for metrological applications.
This work employs simulations of open quantum systems and the theory of quantum optimal control, specifically the Krotov method, to overcome noise-induced limitations in statically coupled exchange surface qubits, and demonstrates that high-precision operations are achievable through optimized experimental designs that surpass conventional Rabi driving.
This paper demonstrates that near-infrared field-induced dynamics within a molecular cation create an additional quantum pathway that significantly alters the sideband signals in attosecond interferometry, highlighting the need to account for such ionic coupling when interpreting molecular spectroscopy.
The paper proposes a new "co-quantum" concept to provide a physical mechanism for electron-spin collapse, which successfully predicts the results of multi-stage Stern-Gerlach experiments in absolute units without parameter fitting and statistically reproduces the quantum mechanical wave function and density operator.
This study proposes using three-level or four-level quantum systems as refrigerators to cool microwave resonators and reduce thermal noise, demonstrating through analytical results that this method can achieve temperatures below liquid helium levels without traditional cryogenics, with four-level systems offering broader operational parameters by mitigating the limitations of strong laser driving.
This study investigates how laser pulse filamentation in rubidium vapor near the atomic resonance varies with wavelength and demonstrates that pulses below the resonance induce strong self-focusing and sharp plasma boundaries, whereas pulses above the resonance result in weaker focusing and diffuse boundaries due to the interplay of anomalous dispersion, transitions to excited states, and multiphoton ionization rates.
This paper proposes a quantum-enhanced sensing protocol using spin-motion squeezed states in two-dimensional ion crystals within a Penning trap to achieve super-Heisenberg scaling for detecting wave-like dark matter and high-frequency gravitational waves.