Transporting, splitting and merging of atomic ensembles in a chip trap

2020-02-28 15:37:55

chip magnetic cold atom dependent

责任者: Hommelhoff, P.;Hansel, W.;Steinmetz, T.;Hansch, T.W.;Reichel, J. 单位: Ludwig-Maximilians-Univ. Munchen, Germany 来源出处: New Journal of Physics(New J. Phys. (UK)),2005/01/,7(1):- 摘要: We present a toolbox for cold atom manipulation with time-dependent magnetic fields generated by an atom chip. Wire layouts, detailed experimental procedures and results are presented for the following experiments: use of a magnetic conveyor belt for positioning of cold atoms and Bose-Einstein condensates (BECs) with a potential resolution of 2 nm; splitting of thermal clouds and BECs in adjustable magnetic double-well potentials; and controlled splitting of a cold reservoir. The devices that enable these manipulations can be combined with each other. We demonstrate this by combining reservoir splitter and conveyor belt to obtain a cold atom dispenser. We discuss the importance of these devices for quantum information processing, atom interferometry and Josephson junction physics on the chip. For all devices, absorption-image video sequences are provided to demonstrate their time-dependent behaviour 关键词: Bose-Einstein condensation;nanopositioning;quantum optics;radiation pressure;splitting;merging;transporting;atomic ensembles;chip trap;cold atom manipulation;time-dependent magnetic fields;atom chip;wire layouts;magnetic conveyor belt;positioning;Bose-Einstein condensates;thermal clouds;magnetic double well potentials;cold reservoir;cold atom dispenser;quantum information processing;atom interferometry;Josephson junction physics;absorption-image video sequences;time-dependent behaviour