原子物理：2025–2026 年度综述

An annual survey of the physics.atom-ph arXiv category, covering research published from September 2025 – August 2026. Built on a close-reading set of 108 papers and organised into 40 chapters, it maps the year by the field's research sub-directions.

Book framework (share of the year's output):

• Ultracold Atoms and Precision Measurement (86.7%) — This cluster focuses on using ultracold atoms and advanced optical techniques for precision measurements, including frequency standards and fundamental physics tests.
• Optical Clocks and High-Resolution Spectroscopy (4.8%) — This subdirection develops high-resolution spectroscopic methods and optical clocks for precise frequency control and isotope shift measurements.
• Laser Cooling and Ion Trapping Technologies (3.4%) — This cluster advances laser cooling, magneto-optical trapping, and ion beam technologies for experimental atomic physics.
• Ion-Molecule Interactions and Cold Chemistry (2.8%) — This subdirection investigates interactions between ions and molecules, including Feshbach resonances and molecular structure in trapped environments.
• Rydberg Atom Physics and Quantum Simulation (0.7%) — This cluster explores Rydberg states for quantum simulation, including interactions, dynamics, and nonthermal phenomena.
• Fundamental Physics Tests with Atomic Spectroscopy (0.6%) — This subdirection uses precision spectroscopy of atoms and molecules to test fundamental physics beyond the Standard Model.
• Atomic Magnetometry and Light-Matter Interactions (0.4%) — This cluster studies magnetic field effects on atomic systems and develops magnetometry techniques using structured light.
• Integrated Photonic Platforms for Neutral Atoms (0.3%) — This subdirection develops chip-integrated photonic devices for trapping and manipulating neutral atoms for scalable quantum technologies.
• Emerging Technologies for Atomic Manipulation (0.2%) — This cluster addresses key technological challenges in atomic physics, including metasurface trapping and quantum transduction.

Each sub-direction is covered across three chapters — how it framed its questions, the strength of its key findings, and its open debates and frontiers — so the reader gets a traceable picture of what this part of the field actually produced over the year.