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.
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.
The paper proposes a method to achieve near-deterministic loading of optical tweezer arrays by using repulsive barrier potentials to protect trapped particles during multiple loading cycles, significantly increasing filling efficiency for both atoms and molecules.
This paper rigorously establishes that dynamical quantum non-locality originates from the superposition principle by proving that the Wigner propagator reduces to its classical counterpart if and only if the Hamiltonian is at most quadratic, and introduces a measurable signed divergence that unifies the understanding of five distinct quantum phenomena ranging from non-local games to metrological gains.
This paper proposes and demonstrates a hybrid visible-THz quantum interface where strong optical driving of polar emitters creates tunable Rabi-split states that couple to a THz channel, enabling the generation of high-fidelity steady-state entanglement between qubits through collective dissipative dynamics while allowing for complete optical control and readout.
This paper presents an analytical framework demonstrating that nonclassical radiation in strongly laser-driven quantum systems, such as high-order harmonic generation, emerges from the nonlinear dependence of the electronic dipole response on the quantized light-mode coordinate, enabling the engineering of squeezed states and Wigner-function negativity.
This paper presents a method for calculating electric-field-dependent -factors in symmetric top molecules and applies it to RaOCH to identify -doublet levels with small -factor differences, which is crucial for enhancing electron electric dipole moment (eEDM) experiments via laser cooling.
Using a consistent quantum microscopic approach, this paper demonstrates that evanescent modes in waveguides can dominate collective polyatomic effects in atomic ensembles by significantly modifying dipole-dipole interactions, thereby altering cooperative spontaneous decay and radiation transfer.