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We describe a simple and compact architecture for generating all optical frequencies required for the laser cooling, state preparation and detection of atoms in an ultracold rubidium-87 experiment from a single 780 nm laser source. In…

Atomic Physics · Physics 2012-10-26 A. B. Deb , A. Rakonjac , N. Kjaergaard

We have recently demonstrated that optical pumping methods combined with photoassociation of ultra-cold atoms can produce ultra-cold and dense samples of molecules in their absolute rovibronic ground state. More generally, both the external…

Atomic Physics · Physics 2013-08-01 I. Manai , R. Horchani , M. Hamamda , A. Fioretti , M. Allegrini , H. Lignier , P. Pillet , D. Comparat

The coherent control of mesoscopic ensembles of atoms and Rydberg atom blockade are the basis for proposed quantum devices such as integrable gates and single photon sources. So far, experimental progress has been limited to complex…

Quantum Physics · Physics 2012-03-08 H. Kübler , J. P. Shaffer , T. Baluktsian , R. Löw , T. Pfau

We present a viewport for use in Ultra-high vacuum (UHV) based upon the preflattened solder seal design presented in earlier work, Cox et al. Rev. Sci. Inst. 74, 3185 (2003). The design features significant modifications to improve long…

Instrumentation and Detectors · Physics 2009-02-20 K. J. Weatherill , J. D. Pritchard , C. S. Adams , P. F. Griffin , U. Dammalapati , E. Riis

We demonstrate a vacuum-gap ultrastable optical reference cavity that does not require a vacuum enclosure. Our simple method of optical contact bonding in a vacuum environment allows for cavity operation in air while maintaining vacuum…

A quantum simulator based on ultracold optically trapped atoms for simulating the physics of atoms and molecules in ultrashort intense laser fields is introduced. The slowing down by about 13 orders of magnitude allows to watch in slow…

Atomic Physics · Physics 2017-02-01 Simon Sala , Johann Förster , Alejandro Saenz

We demonstrate launching of laser-cooled Yb atoms in a continuous atomic beam. The continuous cold beam has significant advantages over the more-common pulsed fountain, which was also demonstrated by us recently. The cold beam is formed in…

Atomic Physics · Physics 2013-06-19 K. D. Rathod , Alok K. Singh , Vasant Natarajan

We utilize the dark state in a {\Lambda}-type three-level system to cool an ensemble of 85Rb atoms in an optical lattice [Morigi et al., Phys. Rev. Lett. 85, 4458 (2000)]. The common suppression of the carrier transition of atoms with…

Atomic Physics · Physics 2021-01-13 Chang Huang , Shijie Chai , Shau-Yu Lan

We demonstrate rotational and vibrational cooling of cesium dimers by optical pumping techniques. We use two laser sources exciting all the populated rovibrational states, except a target state that thus behaves like a dark state where…

Atomic Physics · Physics 2012-11-13 I. Manai , R. Horchani , H. Lignier , A. Fioretti , M. Allegrini , P. Pillet , D. Comparat

Simultaneous strong coherent pumping of the two transitions of a V-level atom with very differentdecay rates has been predicted to create almost perfect inversion on the narrower transition. Usingthe example of the blue and red transitions…

Quantum Physics · Physics 2021-02-03 Christoph Hotter , David Plankensteiner , Helmut Ritsch

The precise control and knowledge over the atomic dynamics is central to the advancement of quantum technology. The different experimental conditions namely, atoms in a vacuum, an anti-relaxation coated and a buffer gas filled atomic cell…

Atomic Physics · Physics 2022-07-21 Swarupananda Pradhan , Saptarshi Roy Chowdhury

We demonstrate a new feedback algorithm to cool a single neutral atom trapped inside a standing-wave optical cavity. The algorithm is based on parametric modulation of the confining potential at twice the natural oscillation frequency of…

Quantum Physics · Physics 2018-05-23 C. Sames , C. Hamsen , H. Chibani , P. A. Altin , T. Wilk , G. Rempe

We review state-of-the-art theory and experiment of the motion of cold and ultracold atoms coupled to the radiation field within a high-finesse optical resonator in the dispersive regime of the atom-field interaction with small internal…

Quantum Gases · Physics 2013-04-10 Helmut Ritsch , Peter Domokos , Ferdinand Brennecke , Tilman Esslinger

The efficiency of photodesorption of Rb atoms previously collected on polymer organic film has been studied in detail. This study was carried out in a Pyrex glass cell of which the inner surface was covered with (poly)dimethylsiloxane…

Thermocavitation, the creation of a vapor bubble by heating a liquid with a continuous-wave laser, has been studied for a wide range of applications. Examples include the development of an actuator for needle-free jet injectors, as the…

Fluid Dynamics · Physics 2024-01-08 Jelle J. Schoppink , Jose A. Alvarez-Chavez , David Fernandez Rivas

Atomic sensors employing cold-atom technology enable unprecedented accuracy and resolution for next generation atomic clocks, magnetometers, gravimeters, and gyroscopes. To date, however, the size and complexity of cold atom systems have…

Atomic Physics · Physics 2011-11-28 Vishal Shah , Mark Mescher , Rick Stoner , Vladan Vuletic , Robert Lutwak

We demonstrate a novel atom chip trapping system that allows the placement and high-resolution imaging of ultracold atoms within microns from any <100 um-thin, UHV-compatible material, while also allowing sample exchange with minimal…

The lifetime of trapped ion ensembles corresponds to a crucial parameter determining the potential scalability of their prospective applications and is often limited by the achievable vacuum level in the apparatus. We report on the…

Atomic Physics · Physics 2019-12-03 P. Obšil , A. Lešundák , T. Pham , K. Lakhmanskiy , L. Podhora , M. Oral , O. Číp , L. Slodička

To date, realization of a continuous-wave active atomic clock has been elusive primarily due to parasitic heating from spontaneous emission while repumping the atoms. Here, we propose a solution to this problem by replacing the random…

Quantum Physics · Physics 2026-04-10 Jarrod T. Reilly , Simon B. Jäger , John Cooper , Murray J. Holland

We report generation of ultrashort UV pulses by soliton self-compression in kagom\'e-style hollow-core photonic crystal fiber filled with ambient air. Pump pulses with energy 2.6 uJ and duration 54 fs at 400 nm were compressed temporally by…

Optics · Physics 2021-05-05 Jie Luan , Philip St. J. Russell , David Novoa
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