Dissertation/Thesis Abstract

Using Mechanical Oscillators for Transduction and Memory of Quantum States
by McGee, Sarah A., Ph.D., University of Colorado at Boulder, 2012, 109; 3527322
Abstract (Summary)

We study an optomechanical system in which a microwave field and an optical field are coupled to the same mechanical oscillator. We explore the feasibility of using these mechanical oscillators to store quantum mechanical states and to transduce states between optical and microwave electromagnetic oscillators with special consideration given to the effect of mechanical decoherence. Besides being of fundamental interest, this coherent quantum state transfer could also have important practical implications in the field of quantum information science because it allows one to utilize the advantages while overcoming the intrinsic limitations of both platforms. We discuss several state transfer protocols and study their transfer fidelity using a full quantum mechanical model and implementing quantum state diffusion in order to describe the dissipative effects. We find that a state transfer fidelity of 95% can be achieved for parameters realizable with current experimental technology.

Indexing (document details)
Advisor: Holland, Murray J.
Commitee: Bohn, John, Hamilton, Andrew, Lehnert, Konrad, Regal, Cindy
School: University of Colorado at Boulder
Department: Physics
School Location: United States -- Colorado
Source: DAI-B 74/02(E), Dissertation Abstracts International
Subjects: Quantum physics, Optics, Theoretical physics
Keywords: Electromechanics, Heisenberg interferometer, Nanomechanical resonator, Optomechanics, Quantum memory, Quantum transduction
Publication Number: 3527322
ISBN: 978-1-267-61529-9
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