Dark and bright autoionizing states in resonant high harmonic generation: simulation via 1D helium modelWe study the role of dark and bright autoionizing states (AIS) in photoionization and high harmonic generation (HHG) using a 1D helium model. This model allows numerical integration of the…V. V. Strelkov·Dec 7, 2022SaveLearn
Detection of HF and VHF Fields through Floquet Sideband Gaps by `Rabi Matching' Dressed Rydberg AtomsRadio frequencies in the HF and VHF (3 MHz to 300 MHz) bands are challenging for Rydberg atom-based detection schemes, as resonant detection requires exciting the atoms to extremely high energy…Andrew P. Rotunno, Samuel Berweger, Nikunjkumar Prajapati et al.·Dec 6, 2022SaveLearn
A tuneable wavelength reference for chip-scale laser coolingWe demonstrate a tuneable, chip-scale wavelength reference to greatly reduce the complexity and volume of cold-atom sensors. A 1 mm optical path length micro-fabricated cell provides an atomic…S. Dyer, K. Gallacher, U. Hawley et al.·Dec 6, 2022SaveLearn
Tomography of Feshbach Resonance StatesFeshbach resonances are fundamental to interparticle interactions and become particularly important in cold collisions with atoms, ions, and molecules. Here we present the detection of Feshbach…Baruch Margulis, Karl P. Horn, Daniel M. Reich et al.·Dec 6, 2022SaveLearn
Absolute measurement of the relativistic magnetic dipole transition in He-like sulfurWe have made the first absolute, reference-free measurement of the 1s2s 3 S1 → 1s 2 1 S0 relativistic magnetic dipole transition in He-like sulfur. The highly-charged S ions were provided…Jorge Felizardo Dias Cunha Machado, Nancy Paul, Gabrielle Soum-Sidikov et al.·Dec 5, 2022SaveLearn
Bound state properties and positron annihilation in the negatively charged Ps- ion. On thermal sources of fast positrons and annihilation γ-quanta in our GalaxyThe total energy and other bound state properties of the ground (bound) 11S-state in the Ps- (or e-e+e-) ion are determined to very high accuracy. Our best variational energy for…Alexei M. Frolov·Dec 5, 2022SaveLearn
Quantum Electrodynamics of Dicke States: Resonant One-Photon Exchange and Entangled Decay RateWe calculate the one-photon exchange contribution to the interatomic interaction potential between electrically neutral, identical atoms, one of which is assumed to be in an excited state, by…U. D. Jentschura, C. M. Adhikari·Dec 4, 2022SaveLearn
Rydberg Macrodimers: Diatomic molecules on the micrometer scaleControlling molecular binding at the level of single atoms is one of the holy grails of quantum chemistry. Rydberg macrodimers -- bound states between highly excited Rydberg atoms -- provide a novel…Simon Hollerith, Johannes Zeiher·Dec 3, 2022SaveLearn
Intercombination line photoassociation spectroscopy of 87Rb170YbWe report on the first observation of photoassociation near the 2 S 1 2 + 3P1-asymptote in a mixture of 87Rb and 170Yb. In a search spanning binding energies between 0.1…Tobias Franzen, Bastian Pollklesener, Christian Sillus et al.·Dec 2, 2022SaveLearn
Calculation of the near threshold photoabsorption for the ground and excited sodium statesWe revisit the photoabsorption from the ground state of Na, ending below and above the ionization threshold, with special emphasis on the shape of the photoionization cross section around the Cooper…Constantine E. Theodosiou·Dec 1, 2022SaveLearn
Single-photon ionization of aligned H2+ with lower photon energyWe study single-photon ionization of aligned H2+ in a high-frequency low-intensity laser field. We focus on the case where the laser frequency is not far larger than the ionization potential of…F. B. Zhang, J. Y. Che, W. Y. Li et al.·Dec 1, 2022SaveLearn
Phase-Resolved Rydberg Atom Field Sensing using Quantum InterferometryAlthough Rydberg atom-based electric field sensing provides key advantages over traditional antenna-based detection, it remains limited by the need for a local oscillator (LO) for low-field and phase…Samuel Berweger, Alexandra B. Artusio-Glimpse, Andrew P. Rotunno et al.·Dec 1, 2022SaveLearn
QED mα7 effects for triplet states of helium-like ionsWe perform ab initio calculations of the QED effects of order mα7 for the 23S and 23P states of He-like ions. The computed effects are combined with previously calculated energies from…Vladimir A. Yerokhin, Vojtěch Patkóš, Krzysztof Pachucki·Nov 30, 2022SaveLearn
Dissociative Excitation of Acetylene Induced by Electron Impact: Excitation-emission Cross-sectionsThe optical emission spectrum of acetylene excited by monoenergetic electrons was studied in the range of 190 nm to 660 nm. The dissociative excitation and dissociative ionization associated with…Juraj Országh, Marián Danko, Peter Čechvala et al.·Nov 30, 2022SaveLearn
Generation of micro-Joule level coherent quasi-continuum extreme ultraviolet radiation using multi-cycle intense laser-atom interactionsIn the present work we report on the current progress of the recently constructed GW attosecond extreme ultraviolet (XUV) source developed at the Institute of Electronic Structure and Laser of the…Vassilis Tsafas, Theocharis Lamprou, Emmanouil Skantzakis et al.·Nov 29, 2022SaveLearn
Vibronic interactions in trilobite and butterfly Rydberg moleculesUltralong-range Rydberg molecules provide an exciting testbed for molecular physics at exaggerated scales. In the so-called trilobite and butterfly Rydberg molecules, the Born-Oppenheimer…Frederic Hummel, Peter Schmelcher, Matthew T. Eiles·Nov 29, 2022SaveLearn
Shape resonances in photoionization cross sections and time delayShape resonances in photoionization of atoms and molecules arise from a particular geometry of the ionic potential which traps the receding photoelectron in a quasi-bound state in a particular…Anatoli S. Kheifets, Stephen Catsamas·Nov 29, 2022SaveLearn
Nondipole signatures in ionizationA general method for solving numerically the time-dependent Schr\"odinger equation, that is based on the Suzuki-Trotter scheme with the split-step Fourier approach, is introduced. The method relies…M. C. Suster, J. Derlikiewicz, K. Krajewska et al.·Nov 28, 2022SaveLearn
Accurate calculation of the interaction of a barium monofluoride molecule with an argon atom: A step towards using matrix isolation of BaF for determining the electron electric dipole momentCalculations of the BaF-Ar triatomic system are performed with a relativistic Hamiltonian and coupled cluster theory at the CCSD(T) level for 1386 positions of the Ar atom relative to the BaF…G. K. Koyanagi, R. L. Lambo, A. Ragyanszki et al.·Nov 27, 2022SaveLearn
Relativistic two-electron atomic and molecular energies using LS coupling and double groups: role of the triplet contributions to singlet statesThe triplet contribution is computed to the 1 and 2 1Se0 states of the He atom, to the 1\ 1Se0 state of the Li+ and Be2+ ions, and to the X\ 1g+…Péter Jeszenszki, Edit Mátyus·Nov 25, 2022SaveLearn
Charged ultralong-range Rydberg trimersWe show that the recently observed class of long-range ion-Rydberg molecules can be divided into two families of states, which are characterised by their unique electronic structures resulting from…Daniel J. Bosworth, Frederic Hummel, Peter Schmelcher·Nov 24, 2022SaveLearn
Laser cooling of moleculesA recent progress on laser cooling of molecules is summarized. Since the development during 1980s for atomic species, laser cooling has been the very beginning step to cool and trap atoms for…Eunmi Chae·Nov 24, 2022SaveLearn
Fine-structure transitions of the carbon isoelectronic sequence C, N+ and O2+ induced by collisions with atomic hydrogenFine-structure transitions can be involved in various processes including photon absorption, charge transfer and inelastic collision between ions, electrons and neutral atoms. We present…Pei-Gen Yan, James F. Babb·Nov 23, 2022SaveLearn
Non-resonant Coherent Amplitude Transfer in Attosecond Four-Wave Mixing SpectroscopyAttosecond four-wave mixing spectroscopy using an XUV pulse and two noncollinear near-infrared pulses is employed to measure Rydberg wavepacket dynamics resulting from extreme ultraviolet excitation…James D. Gaynor, Ashley P. Fidler, Yuki Kobayashi et al.·Nov 23, 2022SaveLearn
On the principal series of potassiumWe revisit the photoabsorption from the ground state of K through the first ionization limit, and provide recommended values for the optical oscillator strengths. The anomaly in the oscillator…Constantine E. Theodosiou·Nov 23, 2022SaveLearn