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Fabrication and Characterization of Semiconductor Ion Traps for Quantum Information Processing.

dc.contributor.authorStick, Daniel Lynnen_US
dc.date.accessioned2007-09-05T18:51:17Z
dc.date.availableNO_RESTRICTIONen_US
dc.date.available2007-09-05T18:51:17Z
dc.date.issued2007en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/55674
dc.description.abstractThe electromagnetic manipulation of isolated ions has led to many advances in atomic physics, from laser cooling to precision metrology and quantum control. As technical capability in this area has grown, so has interest in building miniature electromagnetic traps for the development of large-scale quantum information processors. This thesis will primarily focus on using microfabrication techniques to build arrays of miniature ion traps, similar to techniques used in fabricating high component density microprocessors. A specific focus will be on research using a gallium arsenide/aluminum gallium arsenide heterostructure as a trap architecture, as well as the recent testing of different ion traps fabricated at outside foundries. The construction and characterization of a conventional ceramic trap capable of shuttling an ion through a junction will also be detailed, and reveal the need for moving towards lithographically fabricated traps. Combined, these serve as a set of proof-of-principle experiments pointing to methods for designing and building large scale arrays of ion traps capable of constituting a quantum information processor. As traps become smaller, electrical potentials on the electrodes have greater influence on the ion. This not only pertains to intentionally applied voltages, but also to deleterious noise sources, such as thermal Johnson noise and the more significant ``patch potential" noise, which both cause motional heating of the ion. These problematic noise sources dovetail with my thesis research into trap miniaturization since their effects become more pronounced and impossible to ignore for small trap sizes. Therefore characterizing them and investigating ways to suppress them have become an important component of my research. I will describe an experiment using a pair of movable needle electrodes to measure the ion heating rate corresponding to the harmonic frequency of the trap, the ion-electrode distance, and the electrode temperature. This information is used for characterizing the fluctuating potentials and exploring the possibility of suppressing motional heating by cooling the trap electrodes. This source of noise is also observed in other systems, and its characterization could potentially improve other precision experiments, such as those measuring deviations in the gravitational inverse square law with proximate masses.en_US
dc.format.extent26 bytes
dc.format.extent38724427 bytes
dc.format.mimetypetext/plain
dc.format.mimetypeapplication/pdf
dc.language.isoen_USen_US
dc.subjectIon Trapen_US
dc.subjectQuantum Computingen_US
dc.titleFabrication and Characterization of Semiconductor Ion Traps for Quantum Information Processing.en_US
dc.typeThesisen_US
dc.description.thesisdegreenamePh.D.en_US
dc.description.thesisdegreedisciplinePhysicsen_US
dc.description.thesisdegreegrantorUniversity of Michigan, Horace H. Rackham School of Graduate Studiesen_US
dc.contributor.committeememberMonroe, Christopher R.en_US
dc.contributor.committeememberKurdak, Cagliyanen_US
dc.contributor.committeememberRaithel, Georgen_US
dc.contributor.committeememberShi, Yaoyunen_US
dc.contributor.committeememberZorn, Jens C.en_US
dc.subject.hlbsecondlevelPhysicsen_US
dc.subject.hlbtoplevelScienceen_US
dc.contributor.affiliationumcampusAnn Arboren_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/55674/2/dstick_1.pdf
dc.owningcollnameDissertations and Theses (Ph.D. and Master's)


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