Observation of Interference Between Two Bose Condensates-Reference-Cited by-同舟云学术

Observation of Interference Between Two Bose Condensates

Published:1997-01-31 Issue:5300 Volume:275 Page:637-641
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Andrews M. R.¹,Townsend C. G.¹,Miesner H.-J.¹,Durfee D. S.¹,Kurn D. M.¹,Ketterle W.¹

Affiliation:

1. 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 ∼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 ∼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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference47 articles.

1. Observation of Bose-Einstein Condensation in a Dilute Atomic Vapor

2. Bose-Einstein Condensation in a Gas of Sodium Atoms

3. Mewes M.-O., et al., ibid. 77, 416 (1996).

4. Direct, Nondestructive Observation of a Bose Condensate

5. Bradley C. C. Sackett C. A. Hulet R. G.in preparation; see also C. C. Bradley et al . Phys. Rev. Lett. 75 1687 (1995).

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