Browsing University of Waterloo by Supervisor "Bajcsy, Michal"
Now showing items 1-14 of 14
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Circuit Quantum Electrodynamics with Flux Qubits
(University of Waterloo, 2019-09-23)This thesis presents circuit quantum electrodynamic (cQED) experiments done with artificial atoms coupled to a high quality factor superconducting microwave resonator. This work discusses the theoretical framework, design, ... -
Controlling Photon Emission from Nitrogen Vacancy Centers in Diamond
(University of Waterloo, 2021-04-16)In this thesis we investigate two domains of control over the photonic emission from NV centers. In the first part of the thesis, which focuses on emission control in the spatial domain, we will be exploring the design of ... -
Creating and probing laser-cooled atomic ensembles inside a hollow-core optical fibre
(University of Waterloo, 2024-01-26)A laser-cooled atomic ensemble confined inside a hollow-core optical fiber offers a unique platform for enhanced light-matter interactions and their applications. At the same time, transferring a cloud of laser-cooled ... -
Creating and shaping light at single photon level
(University of Waterloo, 2021-05-26)The ability to control light at the single photon level is essential for fully harnessing the power of quantum information theory, and precision measurements. In this thesis, we study two phenomena which can help us to ... -
Design and applications of single-photon devices based on waveguides coupled to quantum emitters
(University of Waterloo, 2016-10-28)Engineering photon-photon interactions is fundamentally challenging because photons in vacuum do not interact with each other. While their interactions can be mediated using optical nonlinearities, these effects are ... -
Graphene-based FET biosensors
(University of Waterloo, 2021-06-16)Graphene and graphene-based materials are highly attractive for field effect transistor (FET) applications because of their elevated theoretical charge carrier mobility. Graphene FETs (GFETs) are studied for biosensing ... -
Integrated Waveguide Interfaces for Quantum Optics Applications
(University of Waterloo, 2020-09-30)This dissertation explores the integration and interfacing of a variety of photonic devices with optical waveguides, aiming to minimize the optical losses and physical footprint of such systems. The specific investigations ... -
Laser annealing irradiated silicon single-photon avalanche photodiodes for quantum satellite receiver
(University of Waterloo, 2018-05-11)Single-photon avalanche photodiodes (SPADs) are a practical option for space-based quantum communications requiring single-photon detection. However, radiation damage to SPADs significantly increases their dark count rates ... -
Laser-cooled Atomic Ensembles in Hollow Optical Fibers
(University of Waterloo, 2021-05-06)This thesis explores hollow-core fibres as a platform for quantum optics experiments with laser-cooled atomic ensembles. The non-diffracting, tightly-confined guided modes of these fibers grant us a ~µm-wide one-dimensional ... -
Optical Resonators Integrated into a Hollow Core Photonic Crystal Fiber for Enhanced Light-Matter Interactions
(University of Waterloo, 2019-08-29)The focus of this thesis is to investigate and fabricate a platform that can facilitate the enhancement of light-matter interactions. By tightly confining the photons and atoms to the same region of space, the probability ... -
Quantum experiments with single-photon spin-orbit lattice arrays
(University of Waterloo, 2019-09-19)The thesis introduces two single-photon experiments with the lattice of spin-orbit arrays. The basic background knowledge has been introduced in Chapter 1. Chapters 2-4 describe the detailed techniques used in these two ... -
Spin-Preserving Metasurface-Based Focusing Mirror for Enhancing Light-Matter Interactions
(University of Waterloo, 2021-10-01)We propose a dielectric metasurface mirror that focuses one spin state while diverging the other state and preserves the spin state upon reflection, unlike conventional mirrors. First, we discuss the working principle of ... -
Superradiance and its implementation in cold atoms inside a hollow-core waveguide
(University of Waterloo, 2019-05-23)In this thesis, I am intending to understand the cooperative effect of an ensemble of quantum emitters, which constitutes the preliminary elements of our current experimental investigations towards realization of an ... -
Techniques for Coherent Control of Effective Photon-Photon Interactions at Low Light Levels
(University of Waterloo, 2019-02-01)This thesis proposes improvements on techniques for the coherent control of photon-photon interactions mediated by a cloud of cold atoms. Atoms cooled and trapped in a MOT can be loaded into a hollow, photonic crystal ...