NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Coherent Splitting of Bose-Einstein Condensed Atoms With Optically Induced Bragg Diffraction
Published
Author(s)
M M. Kozuma, Lu Deng, Edward W. Hagley, J Wen, R Lutwak, Kristian Helmerson, S L. Rolston, William D. Phillips
Abstract
We exposed Bose-Einstein condensed sodium atoms to a traveling periodic optical potential and observed coherent splitting of the condensate due to Bragg diffraction. Using the momentum selectivity of the scattering, we were able to separate a component with a narrower momentum width from the original condensate. By repeatedly pulsing the optical potential while keeping the magnetic trap on, we successfully observed the dynamics of the split atomic wave packets in the confining magnetic potential. Such scattering permits the investigation of the mean-field interaction as well as possible demonstration of bosonic stimulation.
Kozuma, M.
, Deng, L.
, Hagley, E.
, Wen, J.
, Lutwak, R.
, Helmerson, K.
, Rolston, S.
and Phillips, W.
(1999),
Coherent Splitting of Bose-Einstein Condensed Atoms With Optically Induced Bragg Diffraction, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=840348
(Accessed October 11, 2025)