Can I read Collisional de-excitation in a quasi-2D degenerate Bose gas on EtoBox?

Collisional de-excitation in a quasi-2D degenerate Bose gas by Spielman, I. B.; Johnson, P. R.; Huckans, J. H.; Fertig, C. D.; Rolston, S. L.; Phillips, W. D.; Porto, J. V. is a scholarly article available to read on EtoBox.

What is Collisional de-excitation in a quasi-2D degenerate Bose gas about?

We separate a Bose-Einstein condensate into an array of 2D sheets using a 1D optical lattice, and then excite quantized vibrational motion in the direction normal to the sheets. Collisions between atoms induce vibrational de-excitation, transferring the large excitation energy into back-to-back outgoing atoms, imaged as rings in the 2D plane. The ring diameters correspond to vibrational energy level differences, and edge-on imaging allows identification of the final vibrational states. Time dependence of these data provides a nearly complete characterization of the decay process including the energies, populations, and lifetimes of the lowest two excited vibrational levels. The measured decay rates represent a suppression of collisional de-excitation due to the reduced dimensionality, a matter wave analog to inhibited spontaneous emission.

Author

Spielman, I. B.; Johnson, P. R.; Huckans, J. H.; Fertig, C. D.; Rolston, S. L.; Phillips, W. D.; Porto, J. V.

Published

2005

Language

EN