11
11
movies
eye 11
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Topics: iran, india, fed, treasury, obama, peter schiff, sam, china, american, d.c., israel, macpherson,...
Source: Comcast Cable
10
10.0
audio
eye 10
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Topics: Radio Program, Scotland, Elections, Public health, Water, Hydrology, Health, Health policy,...
6
6.0
Jun 29, 2018
06/18
by
Jiaming Li; Andrew K. Harter; Ji Liu; Leonardo de Melo; Yogesh N. Joglekar; Le Luo
texts
eye 6
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Open physical systems with balanced loss and gain exhibit a transition, absent in their solitary counterparts, which engenders modes that exponentially decay or grow with time and thus spontaneously breaks the parity-time PT symmetry. This PT-symmetry breaking is induced by modulating the strength or the temporal profile of the loss and gain, but also occurs in a pure dissipative system without gain. It has been observed that, in classical systems with mechanical, electrical, and...
Topics: Atomic Physics, Quantum Physics, Condensed Matter, Quantum Gases, Physics
Source: http://arxiv.org/abs/1608.05061
15
15
Jun 27, 2018
06/18
by
Luca Marmugi; Emilio Mariotti; Alessia Burchianti; Stefano Veronesi; Luigi Moi; Carmela Marinelli
texts
eye 15
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The effects of visible and infrared light on potassium atoms embedded in a nanoporous glass matrix are investigated. Photodesorption by visible light enhances the atomic mobility and causes the formation of metallic nanoparticles. Two different populations of metastable clusters with absorption bands in the near-infrared and infrared are grown as a consequence of illumination. Atoms can move between the two groups through sequences of adsorption/desorption events at the pore surface....
Topics: Condensed Matter, Materials Science, Atomic Physics, Physics
Source: http://arxiv.org/abs/1503.08501
0
0.0
Apr 20, 2016
04/16
by
Funny or Die
movies
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From the series The 11th Hour.
Topics: Funny or Die Video Archive, Ian Boothby, Nancy Robertson, Neil Grahn, Roger Fredericks, The 11th,...
3
3.0
Jun 29, 2018
06/18
by
Michael Gröbner; Philipp Weinmann; Emil Kirilov; Hanns-Christoph Nägerl
texts
eye 3
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We report on the first realization of sub-Doppler laser cooling of 39K atoms using degenerate 3D Raman sideband cooling. We take advantage of the well-resolved excited hyperfine states on the D1 optical transition to produce spin polarized samples with $1.4 \times 10^8$ atoms at temperatures of 1.8 $\mu$K. The phase-space densities are $\geq 10^{-4}$, which significantly improves the initial conditions for a subsequent evaporative cooling step. The presented cooling technique using the D1 line...
Topics: Atomic Physics, Condensed Matter, Quantum Gases, Physics
Source: http://arxiv.org/abs/1612.02309
Topics: Radio Program, Clinical research, Road transport, Vitamins, Pharmacology, Nitrogen metabolism,...
Topics: Radio Program, Galaxies, Insurance, Physical cosmology, Universe, American talk radio hosts, Dark...
18
18
movies
eye 18
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RT news, interviews and shows available as podcasts you can download for free. Our coverage focuses on international headlines, giving an innovative angle set to challenge viewers worldwide.
Topics: iran, julian assange, austria, russia, julian, ukraine, freedom party, london, syria, international...
Source: Antenna
12
12
movies
eye 12
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Topics: europe, manchester united, roger, international atomic agency, freddie mercury, nelson mandela,...
Source: Comcast Cable
Topics: Radio Program, American science fiction writers, Educational stages, Atomic bombings of Hiroshima...
19
19
movies
eye 19
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Topics: iran, vatican, israeli, netanyahu, madrid, israel, roger, real madrid, christopher, washington,...
Source: Antenna
17
17
movies
eye 17
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Topics: iran, trump, europe, germany, european, rouhani, iranian, donald trump, tehran, washington, middle...
Source: Antenna
6
6.0
Jun 28, 2018
06/18
by
Chen Ji
texts
eye 6
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Few-body systems, such as cold atoms and halo nuclei, share universal features at low energies, which are insensitive to the underlying inter-particle interactions at short ranges. These low-energy properties can be investigated in the framework of effective field theory with two-body and three-body contact interactions. I review the effective-field-theory studies of universal physics in three-body systems, focusing on the application in cold atoms and halo nuclei.
Topics: Quantum Gases, Nuclear Theory, Atomic Physics, Condensed Matter, Physics
Source: http://arxiv.org/abs/1512.06114
4
4.0
Jun 29, 2018
06/18
by
Jinwoo Choi; EonHo Chang; Dylan M. Anstine; Mohamed El-Amine Madjet; Himadri S. Chakraborty
texts
eye 4
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We study the photoionization properties of the C_60 versus C_240 molecule in a spherical jellium frame of density functional method. Two different approximations to the exchange-correlation (xc) functional are used: (i) The Gunnerson-Lundqvist parametrization [Phys. Rev. B 13, 4274 (1976)] with an explicit correction for the electron self-interaction (SIC) and (ii) a gradient-dependent augmentation of (i) by using the van Leeuwen and Baerends model potential [Phys. Rev. A 49, 2421 (1994)], in...
Topics: Atomic Physics, Atomic and Molecular Clusters, Physics
Source: http://arxiv.org/abs/1610.00346
Topics: Radio Program, Nuclear technology, Nuclear power, Bombs, Nuclear power stations, Incorporated...
Topics: Radio Program, NPR programs, Nuclear weapons, Mass media, Persecution, East Asian countries,...
Topics: Radio Program, Health, News, Water, Garden features, Business terms, Regions of Florida, Polk...
Topics: Radio Program, Theoretical physicists, String theory, Physical cosmology, Principles,...
4
4.0
Jun 28, 2018
06/18
by
A. Chacón; M. Lewenstein; M. F. Ciappina
texts
eye 4
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Theoretical approaches to strong field phenomena driven by plasmonic fields are based on the length gauge formulation of the laser-matter coupling. From the theoretical viewpoint it is known there exists no preferable gauge and consequently the predictions and outcomes should be independent of this choice. The use of the length gauge is mainly due to the fact that the quantity obtained from finite elements simulations of plasmonic fields is the plasmonic enhanced laser electric field rather...
Topics: Atomic Physics, Physics
Source: http://arxiv.org/abs/1508.04889
3
3.0
Jun 30, 2018
06/18
by
Michael W Lee; Marie Claire Jarratt; Christian Marciniak; Michael J Biercuk
texts
eye 3
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We demonstrate stabilisation of an ultraviolet diode laser via Doppler free spectroscopy of Ytterbium ions in a discharge. Our technique employs polarization spectroscopy, which produces a natural dispersive lineshape whose zero-crossing is largely immune to environmental drifts, making this signal an ideal absolute frequency reference for Yb$^+$ ion trapping experiments. We stabilise an external-cavity diode laser near 369 nm for cooling Yb$^+$ ions, using amplitude-modulated polarisation...
Topics: Physics, Quantum Physics, Atomic Physics, Optics
Source: http://arxiv.org/abs/1402.1248
5
5.0
Jun 30, 2018
06/18
by
Loren Greenman; Christiane P. Koch; K. Birgitta Whaley
texts
eye 5
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We combine multi-channel electronic structure theory with quantum optimal control to derive Raman pulse sequences that coherently populate a valence excited state. For a neon atom, Raman target populations of up to 13% are obtained. Superpositions of the ground and valence Raman states with a controllable relative phase are found to be reachable with up to 4.5% population and phase control facilitated by the pump pulse carrier envelope phase. Our results open a route to creating core-hole...
Topics: Quantum Physics, Physics, Atomic Physics, Chemical Physics
Source: http://arxiv.org/abs/1409.7767
3
3.0
Jun 29, 2018
06/18
by
Russell Kliese; Nazanin Hoghooghi; Thomas Puppe; Felix Rohde; Alexander Sell; Armin Zach; Patrick Leisching; Wilhelm Kaenders; Niamh C. Keegan; Alistair D. Bounds; Elizabeth M. Bridge; Jack Leonard; Charles S. Adams; Simon L. Cornish; Matthew P. A. Jones
texts
eye 3
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Optical frequency combs provide the clockwork to relate optical frequencies to radio frequencies. Hence, combs allow to measure optical frequencies with respect to a radio frequency where the accuracy is limited only by the reference signal. In order to provide a stable link between the radio and optical frequencies, the two parameters of the frequency comb must be fixed: the carrier envelope offset frequency $f_{\rm ceo}$ and the pulse repetition-rate $f_{\rm rep}$. We have developed the first...
Topics: Atomic Physics, Optics, Physics
Source: http://arxiv.org/abs/1605.02426
4
4.0
Jun 29, 2018
06/18
by
Ebubechukwu O. Ilo-Okeke; Tim Byrnes
texts
eye 4
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We further examine a theory of phase contrast imaging (PCI) of cold atomic gases, first introduced by us in Phys. Rev. Lett. {\bf 112}, 233602 (2014). We model the PCI measurement by directly calculating the entangled state between the light and the atoms due to the ac Stark shift, which induces a conditional phase shift on the light depending upon the atomic state. By interfering the light that passes through the BEC with the original light, one can obtain information of the atomic state at a...
Topics: Atomic Physics, Quantum Physics, Physics
Source: http://arxiv.org/abs/1606.08466
2
2.0
Jun 30, 2018
06/18
by
Xia Xu; Bo Qing; Xuzong Chen; Xiaoji Zhou
texts
eye 2
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The ac Stark shift of hyperfine levels of neutral atoms can be calculated using the third order perturbation theory(TOPT), where the third order corrections are quadratic in the atom-photon interaction and linear in the hyperfine interaction. In this paper, we use Green's function to derive the $E^{[2+\epsilon]}$ method which can give close values to those of TOPT for the differential light shift between two hyperfine levels. It comes with a simple form and easy incorporation of theoretical and...
Topics: Physics, Atomic Physics, Optics
Source: http://arxiv.org/abs/1409.1361
2
2.0
Jun 30, 2018
06/18
by
Andrea Simoni; Srihari Srinivasan; Jean-Michel Launay; Krzysztof Jachymski; Zbigniew Idziaszek; Paul S. Julienne
texts
eye 2
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We study polar molecule scattering in quasi-one-dimensional geometries. Elastic and reactive collision rates are computed as a function of collision energy and electric dipole moment for different confinement strengths. The numerical results are interpreted in terms of first order scattering and of adiabatic models. Universal dipolar scattering is also discussed. Our results are relevant to experiments where control of the collision dynamics through one dimensional confinement and an applied...
Topics: Quantum Gases, Physics, Atomic Physics, Condensed Matter
Source: http://arxiv.org/abs/1409.5556
3
3.0
Jun 30, 2018
06/18
by
Mickey McDonald; Bart H. McGuyer; Geoffrey Z. Iwata; Tanya Zelevinsky
texts
eye 3
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For atoms or molecules in optical lattices, conventional thermometry methods are often unsuitable due to low particle numbers or a lack of cycling transitions. However, a differential spectroscopic light shift can map temperature onto the line shape with a low sensitivity to trap anharmonicity. We study narrow molecular transitions to demonstrate precise frequency-based lattice thermometry, as well as carrier cooling. This approach should be applicable down to nanokelvin temperatures. We also...
Topics: Physics, Quantum Gases, Atomic Physics, Quantum Physics, Condensed Matter
Source: http://arxiv.org/abs/1409.5852
4
4.0
Jun 30, 2018
06/18
by
J. Hostetter; J. D. Pritchard; J. E. Lawler; M. Saffman
texts
eye 4
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We report measurements of the absolute excitation frequencies of $^{165}$Ho $4f^{11}6sns$ and $4f^{11}6snd$ odd-parity Rydberg series. The states are detected through depletion of a magneto-optical trap via a two-photon excitation scheme. Measurements of 162 Rydberg levels in the range $n=40-101$ yield quantum defects well described by the Rydberg-Ritz formula. We observe a strong perturbation in the $ns$ series around $n=51$ due to an unidentified interloper at 48515.47(4) cm$^{-1}$. From the...
Topics: Physics, Quantum Physics, Atomic Physics
Source: http://arxiv.org/abs/1412.1428
2
2.0
Jun 30, 2018
06/18
by
Michael Hofmann; Carsten Brée
texts
eye 2
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We demonstrate that Freeman resonances have a strong impact on the nonlinear optical response in femtosecond filaments. These resonances decrease the transient refractive index within a narrow intensity window and strongly affect the filamentation dynamics. In particular, we demonstrate that the peak intensity of the filament can be clamped at these resonances, hinting at the existence of new regimes of filamentation with electron densities considerably lower than predicted by the standard...
Topics: Physics, Atomic Physics, Optics
Source: http://arxiv.org/abs/1412.5345
23
23
movies
eye 23
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Topics: greece, greek, syria, syrian, europe, sweden, libya, athens, moscow, e.u. bailout, george...
Source: Comcast Cable
3
3.0
Jun 30, 2018
06/18
by
J. A. Pérez-Hernández; M. F. Ciappina; M. Lewenstein; A. Zaïr; L. Roso
texts
eye 3
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We present studies of high-order harmonic generation (HHG) at laser intensities well above saturation. We use driving laser pulses which present a particular electron dynamics in the turn-on stage. Our results predict an increasing on the harmonic yield, after an initial dropping, when the laser intensity is increased. This fact contradicts the general belief of a progressive degradation of the harmonic emission at ultrahigh intensities. We have identified a particular set of trajectories which...
Topics: Physics, Atomic Physics
Source: http://arxiv.org/abs/1404.6180
2
2.0
Jun 30, 2018
06/18
by
Horacio Olivares Pilón
texts
eye 2
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The nonrelativistic energies of the homonuclear ion T$_2^+$ are calculated for the ground state using the Lagrange-mesh method as was done for the isotopomers H$_2^+$ and D$_2^+$ ({\it J. Phys. B: At. Mol. Opt. Phys.} {\bf 45} 065101 and {\it J. Phys. B: At. Mol. Opt. Phys.} {\bf 46} 245101). Energies and eigenfunctions are obtained up to four of the lowest bound vibrational states ($v=0,1,2,3$) which support 62, 61, 60 and 58 bound rotational states, respectively. Some quasibound sates are...
Topics: Physics, Atomic Physics, Atomic and Molecular Clusters
Source: http://arxiv.org/abs/1404.6468
2
2.0
Jun 30, 2018
06/18
by
M F Gharaibeh; N El Hassan; M M Al Shorman; J M Bizau; D Cubaynes; S Guilbaud; I Sakho; C Blancard; B M McLaughlin
texts
eye 2
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Measurements of absolute cross sections for the {\it K}-shell photoionization of B-like atomic nitrogen ions were carried out utilizing the ion-photon merged-beam technique at the SOLEIL synchrotron radiation facility in Saint-Aubin, France. High-resolution spectroscopy with E/$\Delta$E $\approx$ 13,500 was the maximum resolution achieved. We have investigated two photon energy regions: 404 eV -- 409 eV and 439 eV -- 442 eV. Resonance peaks found in the experimental measured cross sections are...
Topics: Physics, Atomic Physics, High Energy Astrophysical Phenomena, Astrophysics
Source: http://arxiv.org/abs/1402.0519
2
2.0
Jun 30, 2018
06/18
by
Govinda Clos; Martin Enderlein; Ulrich Warring; Dietrich Leibfried; Tobias Schaetz
texts
eye 2
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We describe a high-resolution spectroscopy method, in which the detection of single excitation events is enhanced by a complete loss of coherence of a superposition of two ground states. Thereby, transitions of a single isolated atom nearly at rest are recorded efficiently with high signal-to-noise ratios. Spectra display symmetric line shapes without stray-light background from spectroscopy probes. We employ this method on a $^{25}$Mg$^+$ ion to measure one, two, and three-photon transition...
Topics: Physics, Quantum Physics, Atomic Physics
Source: http://arxiv.org/abs/1402.1678
2
2.0
Jun 30, 2018
06/18
by
P. Béjot; G. Karras; F. Billard; E. Hertz; B. Lavorel; E. Cormier; O. Faucher
texts
eye 2
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In this Letter, it is experimentally and theoretically shown that weak odd harmonics generated during the propagation of an infrared ultrashort ultra-intense pulse unexpectedly modify the nonlinear properties of the medium and lead to a strong modification of the propagation dynamics. This result is in contrast with all current state-of-the-art propagation model predictions, in which secondary radiations, such as third harmonic, are expected to have a negligible action upon the fundamental...
Topics: Physics, Atomic Physics, Optics
Source: http://arxiv.org/abs/1402.3476
2
2.0
Jun 30, 2018
06/18
by
Steven Peil; Christopher R. Ekstrom
texts
eye 2
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comment 0
We analyze the nature and performance of clocks formed by stabilizing an oscillator to the phase difference between two paths of an atom interferometer. The phase evolution has been modeled as being driven by the proper-time difference between the two paths, although it has an ambiguous origin in the non-relativistic limit and it requires a full quantum-field-theory treatment in the general case. We present conditions for identifying deviations from the non-relativistic limit as a way of...
Topics: Physics, Atomic Physics
Source: http://arxiv.org/abs/1402.6621
Topics: Radio Program, Member states of the African Union, Countries of the Indian Ocean, Commonwealth...
5
5.0
Jun 30, 2018
06/18
by
Anne Crubellier; Rosario González-Férez; Christiane P. Koch; Eliane Luc-Koenig
texts
eye 5
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comment 0
Non-resonant light interacting with diatomics via the polarizability anisotropy couples different rotational states and may lead to strong hybridization of the motion. The modification of shape resonances and low-energy scattering states due to this interaction can be fully captured by an asymptotic model, based on the long-range properties of the scattering [Crubellier et al. arXiv:1412.0569]. Remarkably, the properties of the field-dressed shape resonances in this asymptotic multi-channel...
Topics: Physics, Atomic Physics
Source: http://arxiv.org/abs/1412.7315
2
2.0
Jun 30, 2018
06/18
by
K. Morawetz
texts
eye 2
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comment 0
The short-time evolution of two distinct systems, the pump and probe experiments with semiconductor and the sudden quench of cold atoms in an optical lattice, is found to be described by the same universal response function. This analytic formula at short time scales is derived from the quantum kinetic theory approach observing that correlations need time to be formed. The demand of density conservation leads to a reduction of the relaxation time by a factor of four in quench setups. The...
Topics: Physics, Strongly Correlated Electrons, Quantum Gases, Atomic Physics, Nuclear Theory, Condensed...
Source: http://arxiv.org/abs/1406.6500
5
5.0
Jun 30, 2018
06/18
by
V. N. Shatokhin; R. Blattmann; T. Wellens; A. Buchleitner
texts
eye 5
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We present a generalization of the diagrammatic pump-probe approach to coherent backscattering (CBS) of intense laser light for atoms with degenerate energy levels. We employ this approach for a characterization of the double scattering signal from optically pumped atoms with the transition $J_g\rightarrow J_e=J_g+1$ in the helicity preserving polarization channel. We show that, in the saturation regime, the internal degeneracy becomes manifest for atoms with $J_g\geq 1$, leading to a faster...
Topics: Quantum Physics, Physics, Atomic Physics
Source: http://arxiv.org/abs/1407.2841
3
3.0
Jun 30, 2018
06/18
by
N. Berti; P. Béjot; J. -P. Wolf; O. Faucher
texts
eye 3
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The impact of nonadiabatic laser-induced molecular alignment on filamentation is numerically studied. Weak and strong field model of impulsive molecular alignment are compared in the context of nonlinear pulse propagation. It is shown that the widely used weak field model describing the refractive index modification induced by impulsive molecular alignment accurately reproduces the propagation dynamics providing that only a single pulse is involved during the experiment. On the contrary, it...
Topics: Physics, Atomic Physics, Optics
Source: http://arxiv.org/abs/1407.3952
3
3.0
Jun 30, 2018
06/18
by
Xue-Bin Bian
texts
eye 3
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comment 0
Crank-Nicolson (C-N) Method combined with $ B $-spline basis set can be used in both time-dependent and time-independent calculations of the photoionization cross sections of atoms and molecules. For time-independent systems, it is found that C-N method in imaginary-time propagation (ITP) can converge directly to not only the ground state, but also excited and continuum states by controlling the time step size. The C-N method can also be directly applied in time-dependent calculations. Both...
Topics: Physics, Atomic Physics
Source: http://arxiv.org/abs/1407.4621
3
3.0
Jun 30, 2018
06/18
by
R. M. W. van Bijnen; C. Ravensbergen; D. J. Bakker; G. J. Dijk; S. J. J. M. F. Kokkelmans; E. J. D. Vredenbregt
texts
eye 3
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We demonstrate the ability to excite atoms at well-defined, programmable locations in a magneto-optical trap, either to the continuum (ionisation), or to a Rydberg state. To this end, excitation laser light is shaped into arbitrary intensity patterns with a spatial light modulator. These optical patterns are sensitive to aberrations of the phase of the light field, occuring while traversing the optical beamline. These aberrations are characterised and corrected without observing the actual...
Topics: Physics, Quantum Gases, Atomic Physics, Quantum Physics, Condensed Matter
Source: http://arxiv.org/abs/1407.6856
3
3.0
Jun 30, 2018
06/18
by
Nikesh S. Dattani; Lindsay N. Zack; Ming Sun; Erin R. Johnson; Robert J. Le Roy; Lucy M. Ziurys
texts
eye 3
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comment 0
The recent advent of chirped-pulse FTMW technology has created a plethora of pure rotational spectra for molecules for which no vibrational information is known. The growing number of such spectra demands a way to build empirical potential energy surfaces for molecules, without relying on any vibrational measurements. Using ZnO as an example, we demonstrate a powerful technique for efficiently accomplishing this. We first measure eight new ultra-high precision ($\pm2$ kHz) pure rotational...
Topics: Physics, Chemical Physics, Materials Science, Atomic and Molecular Clusters, Condensed Matter
Source: http://arxiv.org/abs/1408.2276
2
2.0
Jun 30, 2018
06/18
by
A. Ludwig; J. Maurer; B. W. Mayer; C. R. Phillips; L. Gallmann; U. Keller
texts
eye 2
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We report the breakdown of the electric dipole approximation in the long-wavelength limit in strong-field ionization with linearly polarized few-cycle mid-infrared laser pulses at intensities on the order of 10$^{13}$ W/cm$^2$. Photoelectron momentum distributions were recorded by velocity map imaging and projected onto the beam propagation axis. We observe an increasing shift of the peak of this projection opposite to the beam propagation direction with increasing laser intensities. From a...
Topics: Physics, Quantum Physics, Atomic Physics
Source: http://arxiv.org/abs/1408.2336
3
3.0
Jun 30, 2018
06/18
by
Yi-Hsieh Wang; Brandon M. Anderson; Charles W. Clark
texts
eye 3
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comment 0
Bose-Einstein condensates (BECs) of positronium (Ps) have been of experimental and theoretical interest due to their potential application as the gain medium of a $\gamma$-ray laser. Ps BECs are intrinsically spinor due to the presence of ortho-positronium (o-Ps) and para-positronium (p-Ps), whose annihilation lifetimes differ by three orders of magnitude. In this paper, we study the spinor dynamics and annihilation processes in the p-Ps/o-Ps system using both solutions of the time-dependent...
Topics: Quantum Gases, Physics, Atomic Physics, Condensed Matter
Source: http://arxiv.org/abs/1402.5159
8
8.0
Jun 30, 2018
06/18
by
Sunil Kumar; Sumit Sarkar; Gunjan Verma; Chetan Vishwakarma; Md. Noaman; Umakant Rapol
texts
eye 8
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We report a novel approach for preparing a Bose-Einstein condensate (BEC) of $^{87}$Rb atoms using electro-pneumatically driven transfer of atoms into a Quadrupole-Ioffe magnetic trap (QUIC Trap). More than 5$\times$$10^{8}$ atoms from a Magneto-optical trap are loaded into a spherical quadrupole trap and then these atoms are transferred into an Ioffe trap by moving the Ioffe coil towards the center of the quadrupole coil, thereby, changing the distance between quadrupole trap center and the...
Topics: Physics, Quantum Physics, Atomic Physics
Source: http://arxiv.org/abs/1408.4640
7
7.0
Jun 30, 2018
06/18
by
Alison Crawford-Uranga; Umberto De Giovannini; Esa Räsänen; Micael Jose Tourdot de Oliveira; Duncan John Mowbray; George M. Nikolopoulos; Evangelos T. Karamatskos; Dimitris Markellos; Peter Lambropoulos; Stefan Kurth; Angel Rubio
texts
eye 7
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We demonstrate the capabilities of time-dependent density functional theory (TDDFT) for strong-field, short wavelength (soft X-ray) physics, as compared to a formalism based on rate equations. We find that TDDFT provides a very good description of the total and individual ionization yields for Ne and Ar atoms exposed to strong laser pulses. We assess the reliability of different adiabatic density functionals and conclude that an accurate description of long-range interactions by the exchange...
Topics: Physics, Atomic Physics, Atomic and Molecular Clusters
Source: http://arxiv.org/abs/1408.6067
2
2.0
Jun 30, 2018
06/18
by
Peter K. Molony; Philip D. Gregory; Zhonghua Ji; Bo Lu; Michael P. Köppinger; C. Ruth Le Sueur; Caroline L. Blackley; Jeremy M. Hutson; Simon L. Cornish
texts
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We report the creation of a sample of over 1000 ultracold $^{87}$RbCs molecules in the lowest rovibrational ground state, from an atomic mixture of $^{87}$Rb and Cs, by magnetoassociation on an interspecies Feshbach resonance followed by stimulated Raman adiabatic passage (STIRAP). We measure the binding energy of the RbCs molecule to be $h c \times 3811.576(1)$ cm$^{-1}$ and the $|v''=0, J''=0>$ to $|v''=0, J''=2>$ splitting to be $h \times 2940.09(6)$ MHz. Stark spectroscopy of the...
Topics: Physics, Atomic Physics
Source: http://arxiv.org/abs/1409.1485
2
2.0
Jun 30, 2018
06/18
by
Johannes Deiglmayr; Heiner Saßmannshausen; Pierre Pillet; Frédéric Merkt
texts
eye 2
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We observe the direct excitation of pairs of Cs atoms from the ground state to molecular states correlating asymptotically to $ns\,n'f$ asymptotes. The molecular resonances are interpreted as originating from the dipole-quadrupole interaction between the $ns\,n'f$ pair states and close-by $np\,np$ asymptotes ($22\leq n \leq 32$). This interpretation is supported by Stark spectroscopy of the pair states and a detailed modeling of the interaction potentials. The dipole-quadrupole interaction...
Topics: Physics, Atomic Physics
Source: http://arxiv.org/abs/1410.0579
