Sympathetic cooling of a large 113Cd+ ion crystal with 40Ca+ in a linear Paul trapWe have sympathetically cooled and crystallized 113Cd+ ions with laser-cooled 40Ca+ ions, and directly observed the complete large bicrystal structure in a…S. N. Miao, H. R. Qin, N. C. Xin et al.·Jan 10, 2022SaveLearn
A compact differential gravimeter at the quantum projection noise limitAtom interferometry offers new perspectives for geophysics and inertial sensing. We present the industrial prototype of a new type of quantum-based instrument: a compact, transportable, differential…Camille Janvier, Vincent Ménoret, Sébastien Merlet et al.·Jan 10, 2022SaveLearn
Perspective: Ultrafast Imaging of Molecular Dynamics Using Ultrafast Low-Frequency Lasers, X-ray Free Electron Laser and Electron PulsesThe requirement of high space-time resolution and brightness is a great challenge for imaging atomic motion and making molecular movies. Important breakthroughs in ultrabright tabletop laser, x-ray…Ming Zhang, Zhenning Guo, Xiaoyu Mi et al.·Jan 10, 2022SaveLearn
Progress toward a microwave frequency standard based on laser-cooled large scale 171Yb+ ion crystalWe report on progress towards a microwave frequency standard based on a laser-cooled 171Yb+ ion trap system. The electronics, lasers, and magnetic shields are integrated into a single physical…N. C. Xin, H. R. Qin, S. N. Miao et al.·Jan 9, 2022SaveLearn
Collisional EPR Frequency Shifts in Cs-Rb-Xe MixturesWe report a measurement of the ratio of dimensionless enhancement factors 0 for Cs-129Xe and Rb-129Xe in the temperature range 115-140\, C; both pairs are used in…S. Zou, D. J. Morin, C. Weaver et al.·Jan 9, 2022SaveLearn
Theoretical Calculation of the Quadratic Zeeman Shift Coefficient of the 3P0 clock state for Strontium Optical Lattice ClockThe quadratic Zeeman shift coefficient of 3P0 clock state for strontium is determined in theory and experiment. In theory, we derived the expression of the quadratic Zeeman shift of 3P0 clock state…Benquan Lu, Xiaotong Lu, Jiguang Li et al.·Jan 8, 2022SaveLearn
Study of two-electron one-photon transition produced in collision of Ne6+ ions with Al target at low energiesTwo-electron one-photon transitions have been successfully observed for the Ne projectile and Al target at low energy regime. Experimental energy values of two-electron one-photon transitions are…Shashank Singh, Mumtaz Oswal, K. P. Singh et al.·Jan 7, 2022SaveLearn
Efficient quantum state preparation using Stern-Gerlach effect on cold atomsThe Zeeman hyperfine state dependent force in a Stern-Gerlach (SG) experiment has been exploited to separate and detect atoms having different Zeeman hyperfine states in a cold atom cloud. Utilizing…Vivek Singh, V. B. Tiwari, S. R. Mishra·Jan 5, 2022SaveLearn
Measurement of the hyperfine coupling constants and absolute energies of the 12s \ 2S1/2, 13s \ 2S1/2, and 11d \ 2DJ levels in atomic cesiumWe report measurements of the absolute energies of the hyperfine components of the 12s \ 2S1/2 and 13s \ 2S1/2 levels of atomic cesium, 133Cs. Using the frequency difference between…Jonah A. Quirk, Amy Damitz, Carol E. Tanner et al.·Jan 3, 2022SaveLearn
g Factor of Lithiumlike Silicon and Calcium: Resolving the Disagreement between Theory and ExperimentThe bound-electron g factor is a stringent tool for tests of the Standard Model and the search for new physics. The comparison between an experiment on the g factor of lithiumlike silicon and the two…V. P. Kosheleva, A. V. Volotka, D. A. Glazov et al.·Jan 3, 2022SaveLearn
Prospects of a superradiant laser based on a thermal or guided beam of Sr-88The prospects of superradiant lasing on the 7.5 kHz wide 1S0-3P1 transition in 88Sr is explored by using numerical simulations of two systems based on realistic experimental numbers.…Mikkel Tang, Stefan A. Schäffer, Jörg H. Müller·Dec 31, 2021SaveLearn
Collision-induced radiative quenching and other disintegration modes of the 2S state of muonic hydrogen and deuterium atomsThe formation and various disintegration modes of 2s states for muonic hydrogen and deuterium atoms at kinetic energies both above and below the 2s-2p threshold are studied. The cross sections of…V. P. Popov, V. N. Pomerantsev·Dec 30, 2021SaveLearn
Multipole-moment effects in ion-molecule reactions at low temperatures: part I -- Ion-dipole enhancement of the rate coefficients of the He+ + NH3 and He+ + ND3 reactions at collision energies near 0 KThe energy dependence of the rates of the reactions between He+ and ammonia (NY3, Y= H,D), forming NY2+, Y and He as well as NY+, Y2 and He, and the corresponding product branching…Valentina Zhelyazkova, Fernanda B. V. Martins, Josef A. Agner et al.·Dec 29, 2021SaveLearn
The role of tunneling in the ionization of atoms by ultrashort and intense laser pulsesClassically allowed transport is shown to compete with quantum tunneling during the ionization of atoms by ultrashort and intense laser pulses, despite Keldysh parameters smaller than unity. This is…Gabriel M. Lando·Dec 29, 2021SaveLearn
Nuclear polarisation and relativistic effects contributions to King plot non-linearityThe effect of nuclear polarisation on the non-linearities of King plot for isotope shift in Ca+, Sr+ and Yb+ ions is studied. These ions are currently used in search for the manifestation of…P. Munro-Laylim, V. A. Dzuba, V. V. Flambaum·Dec 28, 2021SaveLearn
Comment on New apparatus design for high-precision measurement of G with atom interferometryIt is shown that even in the case of a negligibly small change in the gradient of the gravitational field of the mass source in the axial direction, the dependence of this gradient in the radial…B. Dubetsky·Dec 28, 2021SaveLearn
Spin-conservation propensity rule for three-body recombination of ultracold Rb atomsWe explore the physical origin and the general validity of a propensity rule for the conservation of the hyperfine spin state in three-body recombination. This rule was recently discovered for the…Shinsuke Haze, José P. D'Incao, Dominik Dorer et al.·Dec 27, 2021SaveLearn
New source for tuning the effective Rabi frequency discovered in multiphoton ionizationThe Autler-Townes effect due to near resonance transition between 4s-4p states in potassium atoms is mapped out in the photo-electron-momentum distribution and manifests itself as a splitting in the…Wankai Li, Yue Lei, Xing Li et al.·Dec 24, 2021SaveLearn
Two-center basis generator method calculations for Li3+, C3+ and O3+ ion impact on ground state hydrogenThe two-center basis generator method is used to obtain cross sections for excitation, capture, and ionization in Li3+, C3+, and O3+ collisions with ground-state hydrogen at projectile…Anthony C. K. Leung, Tom Kirchner·Dec 23, 2021SaveLearn
Ion-molecule reactions below 1~K: Observation of a strong enhancement of the reaction rate of the ion-dipole reaction He++ CH3FThe reaction between He+ and CH3F forming predominantly CH2+ and CHF+ has been studied at collision energies E coll between 0 and k B· 10~K in a merged-beam…Valentina Zhelyazkova, Fernanda B. V. Martins, Josef A. Agner et al.·Dec 22, 2021SaveLearn
Magneto-optical trapping of mercury at high phase space densityWe present a realization of a magneto-optical trap of mercury atoms on the intercombination line. We report on trapping of all stable mercury isotopes. We characterize the effect of laser detuning,…Quentin Lavigne, Thorsten Groh, Simon Stellmer·Dec 21, 2021SaveLearn
Unidirectional absorption, storage, and emission of single photons in a collectively responding bilayer atomic arrayTwo-dimensional regular arrays of atoms are a promising platform for quantum networks, with collective subradiant states providing long-lived storage and collimated emission allowing for natural…K. E. Ballantine, J. Ruostekoski·Dec 21, 2021SaveLearn
Laser Cooling Scheme for the Carbon Dimer (12C2)We report on a scheme for laser cooling of 12C2. We have calculated the branching ratios for cycling and repumping transitions and calculated the number of photon scatterings required to…Niccolò Bigagli, Daniel W. Savin, Sebastian Will·Dec 20, 2021SaveLearn
Enhancing fiber atom interferometer by in-fiber laser coolingWe demonstrate an inertia sensitive atom interferometer optically guided inside a 22-cm-long negative curvature hollow-core photonic crystal fiber with an interferometer time of 20 ms. The result…Yu Wang, Shijie Chai, Thomas Billotte et al.·Dec 19, 2021SaveLearn
Semiclassical Trajectory Perspective of Glory Rescattering in Strong-field Photoelectron HolographyWe investigate theoretically the photoelectron momentum distribution (PMD) of the ionized atoms irradiated by a linearly polarized intense laser, focusing on the holography interference patterns in…L. G. Liao, Q. Z. Xia, J. Cai et al.·Dec 18, 2021SaveLearn