Atom chips and non-linear dynamics in macroscopic atom traps

Upcroft, Ben (2004). Atom chips and non-linear dynamics in macroscopic atom traps PhD Thesis, School of Physical Sciences, The University of Queensland.

       
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Author Upcroft, Ben
Thesis Title Atom chips and non-linear dynamics in macroscopic atom traps
School, Centre or Institute School of Physical Sciences
Institution The University of Queensland
Publication date 2004
Thesis type PhD Thesis
Supervisor Halina Rubinsztein-Dunlop
Norman Heckenberg
Total pages 264
Collection year 2004
Language eng
Subjects L
240301 Atomic and Molecular Physics
780102 Physical sciences
Formatted abstract  

This thesis details the study of the dynamics of ultra cold gaseous atoms subjected to an amplitude modulated optical standing wave: the Quantum Driven Pendulum (QDP). The atomic system exhibited both classical and quantum characteristics enabling us to study the transition between these very different dynamics. In particular, we were able to tune the system from a deep quantum regime, in which we observed quantum dynamical tunnelling for the first time, to one that was completely describable by classical dynamics. Experimental demonstration of the QDP and its dynamics illustrated that cold atoms form an ideal test bed which could be used to address some of the longstanding questions in the field of quantum chaos.

Many interesting phenomenon are now being observed in the field of atom optics, especially with the advent of the Bose-Einstein condensate (BEC). To incorporate the advantages of using coherent matter in our future experiments, the foundations for creation of a BEC were also constructed in this PhD project. This involved new techniques in the fabrication of an atom chip capable of producing tight and deep magnetic traps.

Keyword Quantum optics
Quantum chaos
Atoms
Bose-Einstein condensation
Tunneling (Physics)

 
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Created: Fri, 24 Aug 2007, 18:34:23 EST