Use this URL to cite or link to this record in EThOS:
Title: Continuous variables and quantum computation
Author: Wagner, Robert Christian
ISNI:       0000 0004 2714 969X
Awarding Body: University of Leeds
Current Institution: University of Leeds
Date of Award: 2011
Availability of Full Text:
Access from EThOS:
This thesis addresses ideas and problems in continuous-variable quan- turn computation and information. Beginning with a physically mo- tivated answer to the question "when can it be said that a physical system is performing a computation?", I make practical investiga- tions into computational problems. I define and describe universal continuous-variable quantum computation (CVQC) in terms of con- ventional encodings into physical systems and discuss algorithms. I then look at the classical information content of some continuous- variable quantum states and how they can be used for a communi- cation scheme. With my collaborators I show how to encode and implement universal classical continuous-variable computation in mi- crowave circuitry. Analogously I then go on to demonstrate universal CVQC in the micromaser experiment. My investigations into realistic computation and information schemes has led me to the conclusion that taking advantage of the natural com- putation found in physical systems is of the utmost importance for lasting progress to be made in computer technology. Having a single "universal" device which can do everything you might ever want it to do given enough time is an out-dated view of computation and special- ist devices are becoming increasingly more important. Investigating unconventional physics for its computational potential, therefore, is a rich source of potential computer technology which will be of everyday importance within our lifetimes.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available