physics.atom-ph

Stabilization of bulk quantum orders in finite Rydberg atom arrays

Calibrated electric-field imaging with Rydberg-state fluorescence and Autler-Townes splitting

This paper presents a spatially resolved, self-calibrating method for imaging millimeter-wave electric fields in warm atomic vapor by utilizing Rydberg-state fluorescence with zero background and Autler-Townes splitting analysis based on the GKSL master equation to visualize interference patterns and engineered field distributions.

Bound-state QED test above the Schwinger limit with kaonic fluorine

Using high-precision x-ray spectroscopy of kaonic fluorine with the SIDDHARTA-2 experiment, researchers successfully tested bound-state quantum electrodynamics in electromagnetic fields exceeding the Schwinger limit, finding that measured transition energies agree with state-of-the-art Dirac-Fock calculations.

Optical Nanofiber Testbeds for Benchmarking Membrane-Waveguide Photonic Integrated Circuit Platforms toward On-Chip Quantum Inertial Sensing

This paper presents a benchmarking study comparing optical nanofiber testbeds with membrane-waveguide photonic integrated circuit platforms to demonstrate low-power, heat-efficient evanescent-field atom guiding and preserved atomic coherence, thereby laying the groundwork for fully integrated, low-SWaP on-chip quantum inertial sensors.

High-sensitivity molecular spectroscopy of SrOH using magneto-optical trapping

This paper demonstrates the use of magneto-optical trapping to perform high-sensitivity spectroscopy on strontium monohydroxide (SrOH), successfully identifying new repumping transitions that increase the trapped molecule count by 4.5-fold and confirming vibrational energy spacings relevant to searches for physics beyond the Standard Model.

Long nuclear spin coherence times for molecules trapped in high-purity solid parahydrogen

By utilizing high-purity solid parahydrogen matrices, researchers achieved significantly extended proton spin coherence times (T2 and T2*) and measured the longitudinal relaxation time (T1) for trapped HD molecules, establishing the intrinsic limits of coherence imposed by the matrix itself.

Applicability of the Dirac-Fock method combined with Core Polarization in calculations of alkali atoms

This paper evaluates the effectiveness of the core-polarization-corrected Dirac-Fock method within the local Dirac-Hartree-Fock framework for calculating static electric dipole polarizabilities, blackbody-radiation-induced Stark shifts, and Bethe logarithms in alkali atoms, comparing the results with existing literature to discuss the approach's strengths and limitations.

Tensor Polarizability of the Nucleus and Angular Mixing in Muonic Deuterium

This paper derives a general formula for the energy level contributions of nuclear tensor polarizability in two-body bound systems, demonstrating its role in mixing states with different orbital angular momenta, and specifically evaluates these effects on the hyperfine structure of P states and S-D mixing in muonic deuterium.

Continuous-wave nuclear laser absorption spectroscopy of Thorium-229

This paper demonstrates the first excitation of the thorium-229 nuclear transition using a continuous-wave laser in absorption mode, a breakthrough that enables fast signal acquisition for solid-state nuclear clocks and reveals a highly symmetric crystal center with minimal electric field gradients.

Engineering magnetically insensitive qubits in metastable electronic D-states of trapped ions

This paper demonstrates the experimental synthesis and coherent manipulation of magnetically insensitive qubits within the metastable D₃/2 manifold of trapped ¹³⁸Ba⁺ ions, achieving a threefold improvement in coherence time (T₂*) compared to traditional ground-state encodings.