78 papers
This paper proposes a purely optical macroscopic trap for alkaline-earth atoms using a bichromatic field resonant with closed optical transitions, which generates new kinetic effects to achieve sub-Doppler cooling and serves as a magnetic-field-free alternative to magneto-optical traps for advanced quantum sensors and frequency standards.
This paper demonstrates that combining the geometric Berry phase with non-Hermitian dissipation enables a fundamentally new amplification mechanism where slow parameter modulation converts a lossy oscillator system into one with gain, a phenomenon uniquely driven by the complex-valued Berry phase.
This paper presents an extended theoretical framework for atomic-scale Stark-shift spectroscopy using light-assisted scanning tunneling microscopy to map subnanometric charge redistribution and polarizability changes in organic molecules under realistic, inhomogeneous electric fields.
This paper reports the experimental preparation and measurement of long-lived metastable states in the 4f5d6s configuration of a single trapped Yb ion, revealing lifetimes ranging from 0.92 s to over 30 s that are corroborated by atomic structure calculations and offer new prospects for quantum information and optical clock applications.
This paper extends the Harrow-Hassidim-Lloyd (HHL) algorithm to qutrits by introducing Weyl-Heisenberg gadgets and a practical implementation scheme, demonstrating that the qutrit version achieves comparable precision with fewer qudits and a similar number of two-qudit gates compared to the traditional qubit-based approach.
The authors developed a surface-electrode ion trap featuring a silicon-etched hole for collimated atomic loading, which enables efficient, isotope-selective sympathetic cooling and the direct generation of ion chains suitable for quantum architectures and precision measurements.
This paper theoretically investigates the polarization-dependent dynamics of laser-assisted (e,2e) ionization of atomic hydrogen by twisted electron beams, revealing that circularly polarized fields yield larger cross-sections and distinct angular distributions compared to linear polarization, while also demonstrating that the triple differential cross-section is highly sensitive to the orbital angular momentum and phase differences in coherent superpositions of twisted projectiles.
This paper presents the first comprehensive set of relativistic distorted-wave calculations for fine-structure-resolved electron impact excitation cross-sections and radiative transition probabilities of neutral tungsten (WI), emphasizing the critical role of metastable states in collisional-radiative modeling for plasma diagnostics.
This paper characterizes Feshbach resonances in all lithium isotopologues by refining interaction potentials with spectroscopic data and threshold measurements, revealing that the heteronuclear system exhibits narrow, triplet-dominated resonances distinct from its homonuclear counterparts, thereby establishing a foundation for creating ultracold molecules across all isotopologues.
Researchers achieved a relative precision of $5.6 \times 10^{-8}^9Be^+$ ions by measuring magnetically insensitive microwave transitions in a linear Paul trap while accounting for high-order Zeeman effects.
This paper establishes a comprehensive Fisher information-based framework for Rydberg atom microwave electrometry that derives an analytical sensitivity expression combining photon shot noise and atomic response, demonstrating that cesium vapor systems can achieve robust sub-nanovolt sensitivity under optimal conditions.
The paper proposes a novel nuclear interferometer utilizing the thorium-229 clock transition to detect ultra-light dark matter, offering enhanced sensitivity to variations in fundamental constants and the QCD sector that could complement and surpass existing terrestrial clock experiments.
This paper presents a perturbative quantum description of the scattering between 12C60 fullerene and 40Ar atoms at cryogenic temperatures, highlighting how the molecule's icosahedral symmetry dictates unusual selection rules for rotational quenching and providing calculations of its polarizability to evaluate long-range van der Waals interactions.
This paper demonstrates that a single trapped rubidium atom acting as a "quantum jump photodetector" can successfully detect individual narrow-band laser photons embedded in strong sunlight, achieving a communication rate of 0.5 bits per symbol and offering potential applications for daytime LIDAR and free-space optical communications.
This paper demonstrates through large-scale simulations and analytical estimates that superradiance in disordered waveguide quantum electrodynamics remains robust against strong spatial and spectral disorder, driven by a spontaneous self-organization of spins that optimizes constructive interference and leads to mirror-asymmetric correlations.
This paper presents a consensus-based algorithm that optimizes qubit positions on neutral atom platforms to tailor interatomic interactions, thereby accelerating convergence and mitigating barren plateaus in variational quantum algorithms for ground state minimization problems.
This study revisits Cherepkov's theory of spin-resolved photoionization in chiral molecules to demonstrate that the ten independent parameters governing spin- and enantio-sensitive observables can be reduced to moments of three fundamental geometric pseudovectors arising solely from electric dipole interactions.
This study integrates Rydberg-atom-based broadband sensing with a 1D ResNet deep learning model to construct spectral fingerprints of partial discharge signals, achieving robust recognition and early warning capabilities for electrical insulation diagnostics without manual feature engineering.