Atom chips provide a versatile quantum laboratory for experiments with ultracold atomic gases. They have been used in diverse experiments involving low-dimensional quantum gases, cavity quantum electrodynamics, atom-surface interactions, and chip-based atomic clocks and interferometers. However, a severe limitation of atom chips is that techniques to… (More)
We report the slowing of a supersonic beam by elastic reflection from a receding atomic mirror. We use a pulsed supersonic nozzle to generate a 511+/-9 m/s beam of helium that we slow by reflection from a Si(111)-H(1x1) crystal placed on the tip of a spinning rotor. We were able to reduce the velocity of helium by 246 m/s and show that the temperature of… (More)
We outline a method to slow paramagnetic atoms or molecules using pulsed magnetic fields. We also discuss the possibility of adiabatically slow trapped particles by decelerating a moving magnetic trap. We present numerical simulation results for the slowing and trapping of molecular oxygen.
Acknowledgments The first person I would like to acknowledge is my supervisor, Mark Raizen. He gave me the opportunity to join his research group and explore interesting physics by experimental means. Mark is always full of ideas and vitality. me the first lab tour after I joined the group. Although he graduated few months later, what he taught me has been… (More)
Nous décrivons la conception et la construction d'une horloge atomique sur une pucè a atomes, visant une stabilité de quelques 10 −13à 1s et une application en tant qu'´ etalon secondaire. Cette horloge est basée sur la transitionà deux photons entre les sous-´ etats hyperfins |1, −1 et |2, 1 de l'´ etat fondamental de l'atome 87 Rb. Elle interroge cette… (More)