Observation of Interference Between Two Bose Condensates |
| |
| Authors: | MR Andrews CG Townsend H Miesner DS Durfee DM Kurn W Ketterle |
| |
| Institution: | The authors are in the Department of Physics and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. |
| |
| Abstract: | Interference between two freely expanding Bose-Einstein condensates has been observed. Two condensates separated by approximately 40 micrometers were created by evaporatively cooling sodium atoms in a double-well potential formed by magnetic and optical forces. High-contrast matter-wave interference fringes with a period of approximately 15 micrometers were observed after switching off the potential and letting the condensates expand for 40 milliseconds and overlap. This demonstrates that Bose condensed atoms are "laser-like"; that is, they are coherent and show long-range correlations. These results have direct implications for the atom laser and the Josephson effect for atoms. |
| |
| Keywords: | |
| 本文献已被 PubMed 等数据库收录！ |
|
