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Author(s): Prateek Pranjal, Jesus González-Vázquez, Roger Y. Bello, and Fernando Martín We have implemented a theoretical approach to provide time- and vibrationally resolved photoelectron spectra and ionization time delays of polyatomic molecules as those expected from current high energy resolution reconstruction of attosecond beatings by interference of two-photon transitions setups… [Phys. Rev. Lett. 135, 223202] Published Wed Nov 26, 2025

Author(s): Mwezi Koni, Fazilah Nothlawala, Vagharshak Hakobyan, Isaac Nape, Etienne Brasselet, and Andrew Forbes We propose a spin-orbit strategy for generating dual-wavelength quantum skyrmions realized either as entangled photon pairs at dual wavelengths or as heralded single-photon states at a given wavelength—regimes neither previously conceptualized nor demonstrated. By coupling a two-photon entangled sta… [Phys. Rev. Lett. 135, 223804...

Author(s): Qi Huang (黄琪), Jin Wang (王进), Rui-Heng Yin (尹睿恒), Yan Tan (谈艳), Cun-Feng Cheng (程存峰), Yu R. Sun (孙羽), An-Wen Liu (刘安雯), and Shui-Ming Hu (胡水明) We demonstrate Doppler broadening thermometry (DBT) with all-frequency-domain measurements. Using the R(10) transition of CO at 1567 nm in a high-finesse optical cavity (mode width 0.6 kHz), we resolve Doppler profiles with high signal-to-noise ratios across 2–17 Pa pressures. A global Voigt...

Author(s): Moto Togawa et al. Ultraintense pulses from x-ray free-electron lasers can drive, within femtoseconds, multiple processes in the inner shells of atoms and molecules in all phases of matter. The ensuing complex ionization pathways of outer-shell electrons from the neutral to the final highly charged states make a compa… [Phys. Rev. Lett. 135, 223003] Published Tue Nov 25, 2025

Author(s): Wim Ubachs, Frank M. J. Cozijn, Meissa L. Diouf, Clement Lauzin, Hubert Jóźwiak, and Piotr Wcisło The one-dimensional confinement of molecules in an optical cavity allows researchers to measure a narrow absorption line without the blurring effects of molecular motion. [Phys. Rev. Lett. 135, 223201] Published Tue Nov 25, 2025

Author(s): J. Scott, H. M. Lim, U. Singla, Q. Meece, J. T. Choy, S. Kolkowitz, T. M. Graham, and M. Saffman We experimentally demonstrate background-free, hyperfine-level-selective measurements of individual Cs atoms by simultaneous cooling to $5.3\text{ }\text{ }\mathrm{μ}\mathrm{K}$ and imaging on the $6{s}_{1/2}→5{d}_{5/2}$ electric-quadrupole transition. We achieve hyperfine-resolved detection with fi… [Phys. Rev. Lett. 135, 223403] Published...

Author(s): Lei Du, Xin Wang, Anton Frisk Kockum, and Janine Splettstoesser We introduce the concept of giant superatoms (GSAs), where two or more interacting atoms are nonlocally coupled to a waveguide through one of them, and explore their unconventional quantum dynamics. For braided GSAs, this setup enables decoherence-free transfer and swapping of their internal entangl… [Phys. Rev. Lett. 135, 223601] Published Tue Nov 25, 2025