Beating the density limit by continuously loading a dipole trap from millikelvin-hot magnesium atoms

Autor:	Klaus Zipfel, Dominika Fim, Hrishikesh Kelkar, T. Wübbena, Andre Kulosa, M. Riedmann, J. Friebe, Wolfgang Ertmer, A. Pape, Steffen Ruhmann, Ernst M. Rasel
Rok vydání:	2012
Předmět:	Condensed Matter::Quantum Gases Physics Trap (computing) Dipole Transfer efficiency chemistry Magnesium Magnetic trap chemistry.chemical_element Density limit Physics::Atomic Physics Atomic physics Atomic and Molecular Physics and Optics
Zdroj:	Physical Review A. 86
ISSN:	1094-1622 1050-2947
DOI:	10.1103/physreva.86.043416
Popis:	We load ${10}^{5}$ magnesium atoms in a dipole trap from a millikelvin-hot magneto-optical trap (MOT) using a continuous-loading scheme. Light-assisted two-body processes limit the maximum achievable density in a MOT, resulting in a reduced transfer efficiency into a dipole trap when using the conventional sequential scheme. It is overcome in a continuous-loading scheme where a loss channel is opened in the MOT. This allows the accumulation of atoms in the dipole trap over the trap lifetime, determined by collisions with the background gas. This results in a significantly higher number of trapped atoms even at a lower steady-state peak density in the MOT.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a20b467fc7101d5f1ebad31af12dafbc https://doi.org/10.1103/physreva.86.043416 Zobrazit plný text záznamu