Quantum superchemistry: Role of trapping profile and quantum statistics

Olsen, M. K. (2004) Quantum superchemistry: Role of trapping profile and quantum statistics. Physical Review A, 69 1: 013601-1-013601-10. doi:10.1103/PhysRevA.69.013601

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Author Olsen, M. K.
Title Quantum superchemistry: Role of trapping profile and quantum statistics
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
1094-1622
Publication date 2004
Year available 2004
Sub-type Article (original research)
DOI 10.1103/PhysRevA.69.013601
Open Access Status File (Publisher version)
Volume 69
Issue 1
Start page 013601-1
End page 013601-10
Total pages 10
Place of publication College Park, MD, United States
Publisher American Physical Society
Language eng
Abstract The process of Raman photoassociation of a trapped atomic condensate to form condensed molecules has been labeled superchemistry because it can occur at 0 K and experiences coherent bosonic stimulation. We show here that the differences from ordinary chemical processes go even deeper, with the conversion rates depending on the quantum state of the reactants, as expressed by the Wigner function. We consider different initial quantum states of the trapped atomic condensate and different forms of the confining potentials, demonstrating the importance of the quantum statistics and the extra degrees of freedom which massive particles and trapping potentials make available over the analogous optical process of second-harmonic generation. We show that both mean-field analyses and quantum calculations using an inappropriate initial condition can make inaccurate predictions for a given system. This is possible whether using a spatially dependent analysis or a zero-dimensional approach as commonly used in quantum optics.
Keyword Optics
Physics, Atomic, Molecular & Chemical
Bose-einstein Condensate
Dynamics
State
Interference
Equation
Optics
Vortex
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Physical Sciences Publications
 
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Created: Wed, 19 Sep 2007, 18:38:19 EST