The nonlocal emitter-waveguide coupling, which gives birth to the so called giant atom, represents a new paradigm in field of quantum optics and waveguide QED. We investigate single-photon scattering one-dimensional on two-level or three-level atom. Thanks natural interference induced by back forth photon transmitted/reflected between atom-waveguide coupling points, transmission can be dynamica...

Title of Dissertation: Two Experiments with Cold Atoms: I. Application of Bessel Beams for Atom Optics, and II. Spectroscopic Measurements of Rydberg Blockade Effect Ilya Arakelyan, Doctor of Philosophy, 2010 Dissertation directed by: Prof. Wendell Hill, III Department of Physics In this dissertation we report the results of two experimental projects with lasercooled rubidium atoms: I. Applicat...

During the last years the development of different and powerful laser cooling techniques [1] has lead to the experimental observation of several striking matter–wave phenomena for cold atoms. These phenomena resemble the usual effects observed in standard optics, and therefore they have been the subject of study of a fast– developing research field properly called atom optics. Some atom optics ...

Cold atoms in optical potentials provide an ideal test bed to explore quantum nonlinear dynamics. Atoms are prepared in a magneto-optic trap or as a dilute Bose–Einstein condensate and subjected to a far detuned optical standing wave that is modulated. They exhibit a wide range of dynamics, some of which can be explained by classical theory while other aspects show the underlying quantum nature...

An analogy is explored between a setup of three atomic traps coupled via tunneling and an internal atomic three-level system interacting with two laser fields. Within this scenario we describe a STIRAP like process which allows to move an atom between the ground states of two trapping potentials and analyze its robustness. This analogy is extended to other robust and coherent transport schemes ...

In 1992, with the backing of CNRS, Alain Aspect founded the atomic optics group at the Institut d’Optique at Orsay, with Nathalie Westbrook and Robin Kaiser, and later Christoph Westbrook. Atomic optics is a new field of research which aims to use the forces exerted by lasers on atoms to control their paths, in the same way as traditional optics controls light rays with mirrors and lenses. From...

Quantum reflection of an atomic wave from a solid surface is caused by the attractive van der Waals force acting on the atom near the surface. The researchers had previously verified the quantum reflection of a cold neon atomic beam from a silicon surface. In this research they demonstrate the first known reflective atom-optical elements that use natural interaction of a solid surface, or attra...