Dissertation/Thesis Abstract

Quantum Optics in Photonic Crystal Cavities
by Thon, Susanna Mitrani, Ph.D., University of California, Santa Barbara, 2010, 219; 3439487
Abstract (Summary)

Photonic crystal defect cavities are attractive platforms for solid state quantum optics experiments due to their ability to concentrate light to subwavelength volumes. This thesis describes several experiments that use photonic crystal defect cavities in gallium arsenide to explore effects in cavity quantum electrodynamics and nonlinear quantum optics. The first experiment involves an all-optical scheme to measure the position of an embedded In(Ga)As quantum dot to nanometer accuracy. High quality photonic crystal cavities are then fabricated around the measured position, and deterministic strong coupling between the quantum dot emission and the cavity mode is achieved. Two different electrical tuning methods for vertically separated and laterally separated individual quantum dots are demonstrated. By providing a scalable solid state platform, these methods should enable the use of coupled quantum dot-cavity mode systems for quantum information processing purposes. Next, the high value of the second order nonlinear susceptibility in GaAs is exploited in a proposal to observe frequency conversion in coupled photonic crystal cavity modes. Photonic quasicrystal lattices are shown to be ideal candidates for this proposal because they have band gaps at multiple frequencies, due to their possession of multiple Bragg scattering length scales. A specific defect cavity with spatially overlapping modes at widely spaced frequencies is investigated. Three experiments using oxide apertured micropillar cavities coupled to embedded quantum dots are discussed. A laser hole burning method for tuning the birefringence of the fundamental mode is described, along with a permanent single mode fiber-connectorization process and a proposal for optical spin read-out of a trapped electron in an embedded quantum dot. Finally, two emerging applications of photonic crystal cavities are discussed. An AC tuning method that uses surface acoustic waves to mechanically deform photonic crystal membranes is described. This method achieves an order of magnitude improvement in the tuning rate over previous mechanisms. Deterministic coupling between gallium phosphide photonic crystal cavity modes and diamond nanocrystals containing nitrogen-vacancy defect centers positioned at the cavity mode maxima in the visible is demonstrated.

Indexing (document details)
Advisor: Bouwmeester, Dirk
Commitee: Gwinn, Elisabeth, Petroff, Pierre M., Pincus, Philip
School: University of California, Santa Barbara
Department: Physics
School Location: United States -- California
Source: DAI-B 72/03, Dissertation Abstracts International
Subjects: Solid State Physics, Condensed matter physics, Optics
Keywords: Nonlinear optics, Photonic crystals, Quantum dots
Publication Number: 3439487
ISBN: 978-1-124-44649-3
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