Showing papers by "Chris J. Vale published in 2007"
TL;DR: In this article, Bose-Einstein condensates of 6Li2 molecules were produced in a low power (22 W) crossed optical dipole trap. But they were not shown to have a high degree of flexibility in trapping geometry for studying ultracold Bose gases.
Abstract: We produce Bose–Einstein condensates of 6Li2 molecules in a low power (22 W) crossed optical dipole trap. Fermionic 6Li atoms are collected in a magneto-optical trap from a Zeeman slowed atomic beam and then loaded into the optical dipole trap where they are evaporatively cooled to quantum degeneracy. Our simplified system offers a high degree of flexibility in trapping geometry for studying ultracold Fermi and Bose gases.
22 citations
TL;DR: In this paper, the authors used photoionization of atoms and subsequent detection of the generated ions. But they focused on the characterization of the ion detector with emphasis on its calibration via the correlation of ions with simultaneously generated electrons and achieved a detection efficiency of 47.8±2.6 %.
Abstract: We experimentally investigate a scheme for detecting single atoms magnetically trapped on an atom chip. The detector is based on the photoionization of atoms and the subsequent detection of the generated ions. We describe the characterization of the ion detector with emphasis on its calibration via the correlation of ions with simultaneously generated electrons. A detection efficiency of 47.8±2.6 % is measured, which is useful for single-atom detection, and close to the limit allowing atom counting with sub-Poissonian uncertainty.
14 citations
03 Dec 2007
TL;DR: In this article, Bose-Einstein condensates of 6Li2molecules were created in an all-optical setup using a low power (25 W) crossed dipole trap.
Abstract: We create Bose-Einstein condensates of6Li2molecules in an all-optical setup using a low power (25 W) crossed dipole trap. Our system contains a number of simplifications compared to existing setups and offers a high degree of flexibility in the trapping geometry. We will present our latest results and report on progress towards making p-wave Feshbach molecules.
2 citations
01 Jan 2007
TL;DR: In this article, cold-atom experiments are made possible by combining magnetic traps with tightly confining optical dipole potentials, and quantitative observations of the statics and dynamics of condensate formation driven by compression rather than cooling.
Abstract: New kinds of cold-atom experiments are made possible by combining magnetic traps with tightly confining optical dipole potentials. These include quantitative observations of the statics and dynamics of condensate formation driven by compression rather than cooling, as well as studies of the dynamics of quantum shock fronts in expanding condensates. We show qualitative experimental results along with comparisons with theoretical models.
TL;DR: In this article, Bose-Einstein condensates of 6Li2 molecules were produced in a low power (22 W) crossed optical dipole trap. But they were not shown to have a high degree of flexibility in trapping geometry for studying ultracold Bose gases.
Abstract: We produce Bose-Einstein condensates of 6Li2 molecules in a low power (22 W) crossed optical dipole trap. Fermionic 6Li atoms are collected in a magneto-optical trap from a Zeeman slowed atomic beam, then loaded into the optical dipole trap where they are evaporatively cooled to quantum degeneracy. Our simplified system offers a high degree of flexibility in trapping geometry for studying ultracold Fermi and Bose gases.