Quantum Interference and the Trapped Bose Condensed System
Juhao Wu, A. Widom (Northeastern University)
TL;DR
This paper explores quantum interference phenomena in Bose-Einstein condensates trapped in double-minima potentials, analyzing how two coherent sources interfere during condensate expansion.
Contribution
It provides a simplified theoretical model based on momentum distributions to explain interference effects observed in experiments with trapped Bose condensates.
Findings
Interference patterns arise from two coherent wave function maxima.
Theoretical model matches experimental interference observations.
Double-minima trapping potential creates conditions for quantum interference.
Abstract
In experiments involving Bose condensed atoms trapped in magnetic bottles, plugging the hole in the bottle potential with a LASER beam produces a new potential with two minima, and thus a condensate order parameter (i.e. wave function) with two maxima. When the trapping potential is removed and the condensate explodes away from the trap, the two wave function maxima act as two coherent sources which exhibit amplitude interference. A simplified theoretical treatment of this experimental effect is provided by considering momentum distributions.
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Taxonomy
TopicsCold Atom Physics and Bose-Einstein Condensates · Quantum Information and Cryptography · Experimental and Theoretical Physics Studies