We consider the dynamics of Superconducting QUantum Interference Device (SQUID) rings in the presence of time dependent magnetic fields, solving the time dependent Schrodinger equation computationally. We compare the quantum mechanical behaviour of the SQUID ring with that of a simple two state system (the ammonia maser), finding close parallels between these two systems. We then consider the idea of measurement of macroscopic quantum objects by modelling the SQUID ring inductively coupled to a classical measurement device (a LC oscillator circuit). We solve the equations of motion for this coupled system both in the phenomenological Resistively Shunted Junction plus Capacitance (RSJ+C) model and within the framework of two models using a purely quantum mechanical SQUID ring.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:310252 |
| Date | January 2000 |
| Creators | Everitt, Mark Julian |
| Publisher | University of Sussex |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
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