Geophysical survey based on Hybrid Gravimetry using Relative Measurements and an Atomic Gravimeter as an Absolute ReferenceGravimetry is a versatile metrological approach in geophysics to accurately map subterranean mass and density anomalies. There is a broad diversification regarding the working principle of…Nathan Shettell, Kai Sheng Lee, Fong En Oon et al.·Nov 1, 2023SaveLearn
FPGA-based residual amplitude modulation suppression and control for compact atomic clocksWe designed an FPGA fabric to provide phase modulation techniques to lock lasers to optical frequency references. The method incorporates an active residual-amplitude-modulation (RAM) suppression…Tin Nghia Nguyen, Thomas R. Schibli·Nov 1, 2023SaveLearn
Controlled dissipation for Rydberg atom experimentsWe demonstrate a simple technique for adding controlled dissipation to Rydberg atom experiments. In our experiments we excite cold rubidium atoms in a magneto-optical trap to 70-S Rydberg states,…Bleuenn Bégoc, Giovanni Cichelli, Sukhjit P. Singh et al.·Oct 31, 2023SaveLearn
Long-range interaction of hydrogen atoms at finite temperaturesIn this study, we reexamine the long-range interaction between two atoms placed in an equilibrium thermal radiation environment. Employing the formalism of quantum electrodynamics at finite…T. Zalialiutdinov, D. Solovyev·Oct 31, 2023SaveLearn
Observation of a low-lying metastable electronic state in highly charged lead by Penning-trap mass spectrometryHighly charged ions (HCIs) offer many opportunities for next-generation clock research due to the vast landscape of available electronic transitions in different charge states. The development of XUV…Kathrin Kromer, Chunhai Lyu, Menno Door et al.·Oct 30, 2023SaveLearn
Shift of nuclear clock transition frequency in 229Th ions due to hyperfine interactionWe calculate hyperfine structure of 229Th and its ions (Th~IV, Th~III, Th~II, Th~I) to reveal the dependence of the nuclear clock frequency on the hyperfine interaction (hfi). We calculate first…V. A. Dzuba, V. V. Flambaum·Oct 28, 2023SaveLearn
Resolved-sideband cooling of a single 9Be+ ion in a Penning trapManipulating individual trapped ions at the single quantum level has become standard practice in radio-frequency ion traps, enabling applications from quantum information processing to precision…Juan M. Cornejo, Johannes Brombacher, Julia A. Coenders et al.·Oct 27, 2023SaveLearn
Collisional shift and broadening of Rydberg states in nitric oxide at room temperatureWe report on the collisional shift and line broadening of Rydberg states in nitric oxide (NO) with increasing density of a background gas at room temperature. As a background gas we either use NO…Fabian Munkes, Alexander Trachtmann, Patrick Kaspar et al.·Oct 27, 2023SaveLearn
Near-to mid-IR spectral purity transfer with a tunable frequency comb: methanol frequency metrology over a record frequency spanWe report the upgrade and operation of a frequency-comb-assisted high-resolution mid-infrared molecular spectrometer allowing us to combine high spectral purity, SI-traceability, wide tunability and…D B A Tran, Olivier Lopez, M Manceau et al.·Oct 27, 2023SaveLearn
The Four-Boson First-Excited State Near Two-Body UnitarityNear two-body unitarity, the three-boson system is characterized by an approximate discrete scale invariance manifest in a geometric tower of bound states (the Efimov effect). In the absence of a…Feng Wu, T. Frederico, R. Higa et al.·Oct 26, 2023SaveLearn
Precision measurement of the n=2 triplet P J=1-to-J=0 fine structure of atomic helium using frequency-offset separated oscillatory fieldsIncreasing accuracy of the theory and experiment of the n=2 3P fine structure of helium has allowed for increasingly-precise tests of quantum electrodynamics (QED), determinations of the…F. Heydarizadmotlagh, T. D. G. Skinner, K. Kato et al.·Oct 25, 2023SaveLearn
Measuring the nuclear magnetic quadrupole moment of optically trapped ytterbium atoms in the metastable stateWe propose a scheme to measure a nuclear magnetic quadrupole moment (MQM), a CP-violating electromagnetic moment that appears in the nuclear sector, using the long-lived 3P2 metastable state in…Ayaki Sunaga, Yuiki Takahashi, Amar Vutha et al.·Oct 25, 2023SaveLearn
Demonstration and frequency noise characterization of a 17 μm quantum cascade laserWe evaluate the spectral performance of a novel continuous-wave room-temperature distributed feedback quantum cascade laser operating at the long wavelength of 17 μm. By demonstrating broadband…M Manceau, T E Wall, H Philip et al.·Oct 25, 2023SaveLearn
Dynamic Fabry-Perot cavity stabilization technique for atom-cavity experimentsWe present a stabilization technique developed to lock and dynamically tune the resonant frequency of a moderate finesse Fabry-P\'erot (FP) cavity used in precision atom-cavity quantum…S. P. Dinesh, V. R. Thakar, V. I. Gokul et al.·Oct 25, 2023SaveLearn
Observation of interatomic Coulombic decay induced by double excitation of helium in nanodropletsInteratomic Coulombic decay (ICD) plays a crucial role in weakly bound complexes exposed to intense or high-energy radiation. So far, neutral or ionic atoms or molecules have been prepared in singly…B. Bastian, J. D. Asmussen, L. Ben Ltaief et al.·Oct 24, 2023SaveLearn
Approximate symmetries of long-range Rydberg molecules including spin effectsAn operator that generates an approximate symmetry of long-range Rydberg molecules (LRRMs) formed by two alkali atoms, one in a Rydberg state and the other in the ground state, is identified. This is…H. Rivera-Rodríguez, R. Jáuregui·Oct 23, 2023SaveLearn
Achromatic, planar Fresnel-Reflector for a Single-beam Magneto-optical TrapWe present a novel achromatic, planar, periodic mirror structure for single-beam magneto-optical trapping and demonstrate its use in first- and second-stage cooling and trapping for different…Saskia Bondza, Tobias Leopold, Roman Schwarz et al.·Oct 23, 2023SaveLearn
Quectonewton local force sensorWe report on the realization of a quantum sensor based on trapped atom interferometry in an optical lattice for the measurement of atom-surface interactions, with sub-micrometer-level control of the…Yann Balland, Luc Absil, Franck Pereira dos Santos·Oct 23, 2023SaveLearn
Feasibility of extracting the proton weak charge from quantum-control measurements of atomic parity violation on the 2s-3s or 2s-4s transition in hydrogenWe explore the feasibility of extracting electroweak observables from a measurement of atomic parity violation in hydrogen. Our proposed quantum-control scheme focuses on the 2s-3s or 2s-4s…Jiguang Li, Andrei Derevianko, D. S. Elliott·Oct 23, 2023SaveLearn
Kato's theorem and ultralong-range Rydberg moleculesWe consider non-adiabatic coupling in the "trilobite"-like long-range Rydberg molecules created by perturbing degenerate high- Rydberg states with a ground-state atom. Due to the flexibility…Matthew T. Eiles, Frederic Hummel·Oct 23, 2023SaveLearn
Progress toward the P, T-odd Faraday effect: Light absorption by atoms briefly interacting with a laser beamWe investigate the process of photon absorption by atoms or molecules shortly interacting with a laser beam in the dipole approximation. Assuming that the interaction time τ is much smaller than…Dmitry V. Chubukov, Ivan A. Aleksandrov, Leonid V. Skripnikov et al.·Oct 22, 2023SaveLearn
Insight into the prospective evaluation of third-order interelectronic corrections on Li-like ionsRelying on the redefined vacuum state approach, and based on one-particle three-loop Feynman diagrams, partial third-order interelectronic corrections to the valence electron energy shift are…R. N. Soguel, S. Fritzsche·Oct 19, 2023SaveLearn
Relativistic calculation of non-dipole effects in high harmonic generationWe present results of relativistic calculations of even order harmonic generation from various atomic targets. The even order harmonics appear due to the relativistic non-dipole effects. We take…I. A. Ivanov, Kyung Taec Kim·Oct 19, 2023SaveLearn
Microwave photo-association of fine-structure-induced Rydberg (n+2)D5/2nFJ macro-dimer molecules of cesiumLong-range (n+2)D5/2 \, nFJ Rydberg macro-dimers are observed in an ultracold cesium Rydberg gas for 39≤ n≤48. Strong dipolar "flip" ($ D5/2 F5/2 Vdd …Jingxu Bai, Yuechun Jiao, Rong Song et al.·Oct 18, 2023SaveLearn
Modulation Transfer Spectroscopy of the D1 Transition of Potassium: Theory and ExperimentWe report on a study of modulation transfer spectroscopy of the 4S1/2→ 4P1/2 (D1) transition of naturally abundant potassium in a room-temperature vapour…Andrew D. Innes, Prosenjit Majumder, Heung-Ryoul Noh et al.·Oct 17, 2023SaveLearn