Lithium-cesium slow beam from a two-dimensional magneto-optical trapWe present the creation of a lithium-cesium slow beam using a two-dimensional magneto-optical trap. The two-species atomic beam is directed to load a three-dimensional magneto-optical trap in…Y. -D. Chen, W. -X. Li, M. -E. Chou et al.·Dec 1, 2020SaveLearn
Breakup of rotating asymmetric quartic-quadratic trapped condensatesThe threshold conditions for a rotating pancake-like asymmetric quartic-quadratic confined condensate to break in two localized fragments, as well as to produce giant vortex at the center within the…Leonardo Brito, Alex Andriati, Lauro Tomio et al.·Dec 1, 2020SaveLearn
Radiative α7m QED contribution to the helium Lamb shiftWe present a derivation of the last unknown part of the α7m contribution to the Lamb shift of a two-electron atom, induced by the radiative QED effects beyond the Bethe logarithm. This…Vojtěch Patkóš, Vladimir A. Yerokhin, Krzysztof Pachucki·Dec 1, 2020SaveLearn
Atomic calculations of hyperfine structure anomaly in goldThe magnetic hyperfine structure constants have been calculated for low-lying levels in neutral gold atom and gold-like ion of mercury taking into account Bohr--Weisskopf (BW) effect. BW effect is…Yu. A. Demidov, E. A. Konovalova, R. T. Imanbaeva et al.·Dec 1, 2020SaveLearn
Measurements of the Hyperfine Structure of Atomic Energy Levels in Co IIAnalysis of hyperfine structure constants of singly ionised cobalt (Co II) were performed on cobalt spectra measured by Fourier transform spectrometers in the region 3000-63000 cm-1…Milan Ding, Juliet C. Pickering·Nov 30, 2020SaveLearn
Efficient quantum memory for heralded single photons generated by cavity-enhanced spontaneous parametric downconversionWe interface a spontaneous parametric down conversion (SPDC) crystal and a cold atomic ensemble and demonstrate a highly efficient quantum memory through polarization-encoded single-photon qubits.…Yu-Chih Tseng, Yan-Cheng Wei, Ying-Cheng Chen·Nov 30, 2020SaveLearn
Vacuum-Ultraviolet Absorption and Emission Spectroscopy of Gaseous, Liquid, and Supercritical XenonBose-Einstein condensation, an effect long known for material particles as cold atomic gases, has in recent years also been observed for photons in microscopic optical cavitites. Here, we report…Christian Wahl, Marvin Hoffmann, Thilo vom Hoevel et al.·Nov 28, 2020SaveLearn
Infrared single-cycle pulse induced high-energy plateaus in high-order harmonic spectroscopyMotivated by the emerging experiments [e.g. Z. Nie et al. Nat. Photon. 12, 489 (2018)] on producing infrared (IR) single cycle pulses in the spectral region 5 - 14 μ m, we…Abdelmalek Taoutioui, Hicham Agueny·Nov 27, 2020SaveLearn
Laser control of ultracold molecule formation: The case of RbSrWe have studied the formation of ultracold RbSr molecules with laser pulses. After discussing the advantages of the Mott insulator phase for the control with pulses, we present two classes of…Adrien Devolder, Michèle Desouter-Lecomte, Osman Atabek et al.·Nov 25, 2020SaveLearn
Observation of electromagnetically induced absorption in a vee + ladder systemWe experimentally demonstrate electromagnetically induced absorption (EIA) in a vee + ladder system. The experiment is done using the low-lying energy levels of 87Rb. A theoretical model of the…Mangesh Bhattarai, Vineet Bharti, Sambit Banerjee et al.·Nov 25, 2020SaveLearn
Photoassociative Spectroscopy of 87SrWe demonstrate photoassociation (PA) of ultracold fermionic 87Sr atoms. The binding energies of a series of molecular states on the 1+u 5s2\,1S0+5s5p\,1P1 molecular…J. C. Hill, W. Huie, P. Lunia et al.·Nov 24, 2020SaveLearn
Simulation of Cryogenic Buffer Gas BeamsThe cryogenic buffer gas beam (CBGB) is an important tool in the study of cold and ultracold molecules. While there are known techniques to enhance desired beam properties, such as high flux, low…Yuiki Takahashi, David Shlivko, Gabriel Woolls et al.·Nov 24, 2020SaveLearn
Electron-impact ionization and ionic fragmentation of O2 from threshold to 120 eV energy rangeWe study the electron-impact induced ionization of O2 from threshold to 120 eV using the electron spectroscopy method. Our approach is simple in concept and embodies the ion source with a…R. A. Lomsadze, M. R. Gochitashvili, R. Ya. Kezerashvili et al.·Nov 24, 2020SaveLearn
Positive-energy spectra of atomic hydrogen in a magnetic field with an adiabatic-basis-expansion methodThe problem of photoionization of atomic hydrogen in a white-dwarf-strength magnetic field is revisited to understand the existing discrepancies in the positive-energy spectra obtained by a variety…L. B. Zhao, K. D. Wang, K. Bartschat·Nov 23, 2020SaveLearn
Time- and frequency-domain two-particle correlations of a driven dissipative Bose-Hubbard modelWe theoretically investigate the time- and frequency-domain two-particle correlations of a driven dissipative Bose-Hubbard model (BHM) at and near a dissipative phase transition (DPT). We compute…Kingshuk Adhikary, Anushree Dey, Arpita Pal et al.·Nov 23, 2020SaveLearn
XUV frequency comb operation in an astigmatism-compensated enhancement cavityWe have developed an extreme ultraviolet (XUV) frequency comb for performing ultra-high precision spectroscopy on the many XUV transitions found in highly charged ions (HCI). Femtosecond pulses from…J. Nauta, J. -H. Oelmann, A. Borodin et al.·Nov 23, 2020SaveLearn
Optical frequency generation using fiber Bragg grating filters for applications in portable quantum sensingA method for the agile generation of the optical frequencies required for laser cooling and atom interferometry of rubidium is demonstrated. It relies on fiber Bragg grating technology to filter the…C. D. Macrae, K. Bongs, M. Holynski·Nov 23, 2020SaveLearn
Coulomb Correlation and Information Entropies in Confined Helium-Like AtomsThe present work studies aspects of the electronic correlation in confined H-, He and Li+ atoms in their ground states using the informational entropies. In this way, different variational…Wallas S. Nascimento, Marcos M. de Almeida, Frederico V. Prudente·Nov 22, 2020SaveLearn
Observation of an electric quadrupole transition in a negative ion: Experiment and TheoryThe first direct experimental observation of an electric quadrupole (E2) transition between bound states of an atomic negative ion has been made. The transition was observed in the…C. W. Walter, S. E. Spielman, R. Ponce et al.·Nov 21, 2020SaveLearn
Atomic ionization by multicharged ions interpreted in terms of poles in the charge complex spaceIn this work we study the single ionization of hydrogen and helium by the impact of a punctual Coulomb projectile. To interpretate the cross section we introduce a series of Pad\'e approximant. The…J. E. Miraglia·Nov 19, 2020SaveLearn
Single-shot Stern-Gerlach magnetic gradiometer with an expanding cloud of cold cesium atomsWe combine the Ramsey interferometry protocol, the Stern-Gerlach detection scheme, and the use of elongated geometry of a cloud of fully polarized cold cesium atoms to measure the selected component…Katja Gosar, Tina Arh, Tadej Mežnaršič et al.·Nov 19, 2020SaveLearn
Testing Quantum Electrodynamics with Exotic AtomsPrecision study of few-electron, high-Z ions is a privileged field for probing high-field, bound-state quantum electrodynamics (BSQED). However, the accuracy of such tests is plagued by nuclear…Nancy Paul, Guojie Bian, Toshiyuki Azuma et al.·Nov 19, 2020SaveLearn
A control hardware based on a field programmable gate array for experiments in atomic physicsExperiments in Atomic, Molecular, and Optical (AMO) physics require precise and accurate control of digital, analog, and radio frequency (RF) signals. We present a control hardware based on a field…A. Bertoldi, C. -H. Feng, H. Eneriz Imaz et al.·Nov 18, 2020SaveLearn
Vector Measurements Using All Optical Scalar Atomic MagnetometersVector field measurement is demonstrated with an all-optical scalar atomic magnetometer using intrinsic parameters related to its scalar operation. The Bell-Bloom type atomic magnetometer measures…Rui Zhang, Rahul Mhaskar, Ken Smith et al.·Nov 17, 2020SaveLearn
Strong Differential Photoion Circular Dichroism in Strong-Field Ionization of Chiral MoleculesWe investigate the differential ionization probability of chiral molecules in the strong field regime as a function of the helicity of the incident light. To this end, we analyze the fourfold…K. Fehre, S. Eckart, M. Kunitski et al.·Nov 17, 2020SaveLearn