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Reservoir engineering for quantum information processing

Busch, Jonathan (2010) Reservoir engineering for quantum information processing. PhD thesis, University of Leeds.

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Abstract

This thesis concerns possible implementations of quantum computing schemes and tries to overcome some standard limitations. The central result is a technique we call reservoir engineering that is applied to optical cavity QED based quantum computing. The usual problem for quantum computing with atomic qubits in cavities is scalability as this requires either the coupling of photons leaking from cavities,using linear optics elements and measurements or shuttling of ions into and out of cavities. We propose an alternative that applies strong dissipative coupling to an environment as a control on fibre-coupled cavity systems. The control mechanism is effectively an overdamping of certain common cavity modes that restricts the time evolution of the qubit-cavity system onto a smaller subsystem consisting of only one common cavity modes. Within this subsystem, we then show that it is possible to implement quantum computing schemes that apply otherwise only to atomic qubits in the same cavity.

Item Type: Thesis (PhD)
Academic Units: The University of Leeds > Faculty of Maths and Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds)
Depositing User: Ethos Import
Date Deposited: 23 Nov 2011 12:39
Last Modified: 07 Mar 2014 11:24
URI: http://etheses.whiterose.ac.uk/id/eprint/1365

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