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We describe optical methods for trapping, cooling, and observing single $^{87}$Rb atoms in a four-lens "Maltese cross" geometry (MCG). The use of four high numerical-aperture lenses in the cardinal directions enables efficient collection of…

Atomic Physics · Physics 2021-03-11 Lorena C. Bianchet , Natalia Alves , Laura Zarraoa , Natalia Bruno , Morgan W. Mitchell

This thesis is divided into two parts, each of which supports constructing and using a lithium magneto-optical trap for cold collision studies: Part I: One outgoing channel of interest from cold collisions is the production of ion pairs. We…

Optics · Physics 2013-10-21 Lisa Madeleine Ugray

We 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 ultrahigh vacuum. We achieve a loading rate of…

Atomic Physics · Physics 2021-02-24 Y. -D. Chen , W. -X. Li , M. -E. Chou , C. -H. Kuo , C. -S. Li , S. Tung

We report a study on the optical dipole force in a ladder like three level atomic systems in the context of coherent population transfer with the chirped few-cycle-pulse laser fields. The phenomenon of coherent population transfer is…

Optics · Physics 2012-12-20 Parvendra Kumar , Amarendra K. Sarma

An optical trapping scheme is proposed by which ultrashort low-amplitude radiations, co-propagating with a continuous train of temporal pulses in a hollow-core photonic crystal fiber filled with Raman-inactive noble gases, can be trapped…

We study the dynamics of atoms in optical traps when exposed to laser cooling light that induces light-assisted collisions. We experimentally prepare individual atom pairs and observe their evolution. Due to the simplicity of the system…

Atomic Physics · Physics 2015-06-17 P. Sompet , A. V. Carpentier , Y. H. Fung , M. McGovern , M. F. Andersen

We study the dynamics of neutral cold atoms in an $L$-shaped crossed-beam optical waveguide formed by two perpendicular red-detuned lasers of different intensities and a blue-detuned laser at the corner. Complemented with a vibrational…

Atomic Physics · Physics 2015-05-18 E. Torrontegui , J. Echanobe , A. Ruschhaupt , D. Guéry-Odelin , J. G. Muga

We describe an approach to optically trapping small, chemically stable molecules at cryogenic temperatures by buffer-gas loading a deep optical dipole trap. The ~10 K trap depth will be produced by a tightly-focused, 1064-nm cavity capable…

The rapidly developing field of optomechanics aims at the combined control of optical and mechanical (solid-state or atomic) modes. In particular, laser cooled atoms have been used to exploit optomechanical coupling for self-organization in…

Optically trapped laser-cooled polar molecules hold promise for new science and technology in quantum information and quantum simulation. Large numerical aperture optical access and long trap lifetimes are needed for many studies, but these…

A unique sample independent 3D self calibration methodology is tested on a unique optical coherence tomography and multi-spectral scanning laser ophthalmoscope (OCT-SLO) hybrid system. Operators visual cognition is replaced by computer…

Medical Physics · Physics 2024-08-08 Mayank Goswami

We demonstrate trapping and quantum state control of single Cesium atoms in a 532 nm wavelength bottle beam trap. The three dimensional trap is formed by crossing two unit charge vortex beams. Single atoms are loaded with 50% probability…

Quantum Physics · Physics 2015-06-03 G. Li , S. Zhang , L. Isenhower , K. Maller , M. Saffman

Magneto-Optical Traps have been used for several decades. Among fundamental mechanisms occuring in such traps, the magnitude of the multiple scattering is still unclear. Indeed, many experimental situations cannot be modeled easily,…

Atomic Physics · Physics 2014-06-11 Rudy Romain , Hélène Louis , Philippe Verkerk , Daniel Hennequin

Deploying autonomous robots in crowded indoor environments usually requires them to have accurate dynamic obstacle perception. Although plenty of previous works in the autonomous driving field have investigated the 3D object detection…

Robotics · Computer Science 2024-02-28 Zhefan Xu , Xiaoyang Zhan , Yumeng Xiu , Christopher Suzuki , Kenji Shimada

The development of the magneto-optical trap revolutionized the fields of atomic and quantum physics by providing a simple method for the rapid production of ultracold, trapped atoms. A similar technique for producing a diverse set of dense,…

Atomic Physics · Physics 2014-04-17 Matthew T. Hummon , Mark Yeo , Benjamin K. Stuhl , Alejandra L. Collopy , Yong Xia , Jun Ye

We firstly discuss classical stability for a dynamical system of two ions levitated in a 3D Radio-Frequency (RF) trap, assimilated with two coupled oscillators. We obtain the solutions of the coupled system of equations that characterizes…

Atomic Physics · Physics 2022-01-06 Bogdan M. Mihalcea , Stephen Lynch

Ultracold atoms are crucial for unlocking truly precise and accurate quantum metrology, and provide an essential platform for quantum computing, communication and memories. One of the largest ongoing challenges is the miniaturization of…

Quantum Gases · Physics 2025-01-06 Alan Bregazzi , James P. McGilligan , Paul F. Griffin , Erling Riis , Aidan S. Arnold

Large clouds of cold atoms prepared in a magneto-optical trap can develop spatio-temporal instabilities when the frequency of the trapping lasers is brought close to the atomic resonance. This system bears close similarities with trapped…

Atomic Physics · Physics 2020-05-27 Marius Gaudesius , Robin Kaiser , Guillaume Labeyrie , Yongchang Zhang , Thomas Pohl

We report on a strategy to maximize the number of chromium atoms transferred from a magneto-optical trap into an optical trap through accumulation in metastable states via strong optical pumping. We analyse how the number of atoms in a…

Quantum Gases · Physics 2015-05-18 G. Bismut , B. Pasquiou , D. Ciampini , B. Laburthe-Tolra , E. Marechal , L. Vernac , O. Gorceix

Optical trapping of metallic microparticles remains a big challenge because of the strong scattering and absorption of light by the particles. In the paper, we report a new mechanism for stable trapping of metallic microparticles by using a…

Optics · Physics 2020-04-30 Yansheng Liang , Zhaojun Wang , Ming Lei