Comparison, optimization, and application of various spontaneous parametric downconversion sources of polarization-entangled photon pairs

As benchtop quantum information protocols become increasingly more advanced and the distances over which these experiments are performed become significantly longer, integrated optics provide a small, robust, and practical alternative to traditional bulk optics. Waveguide technology makes it possible to create bright entangled-photon sources that can be used on platforms where weight and stability requirements are limiting factors, e.g., on aerial or even space-based mobile platforms, which could allow reconfigurable long-distance transfer of photonic qubits. Specifically, for our goals, we are working on the characterization and optimization of both highly nondegenerate and degenerate Spontaneous Parametric Down-Conversion waveguide sources of collinear polarization-entangled photon pairs using various entanglement methods determined by the relevant application. Our ultimate goal is to create polarization-entangled photon pairs that are also spectrally unentangled, a necessary condition for efficient multiphoton protocols, e.g., for quantum repeaters. Additionally, highly nondegenerate polarization-entangled photon pairs can be manipulated to create frequency-entangled pairs for ultra-high-timing-resolution interference-based quantum metrology on the attosecond-level. This metrology scheme would enable new technologies for both biomedical and defense applications.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Physics

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2022

Author dc:creator

• Meier, Kristina A.

Contributors dc:contributor

• Kwiat, Paul G
• Lorenz, Virginia
• Madhavan, Vidya
• Goldschmidt, Elizabeth

• physics
• optical
• quantum
• entanglement
• spontaneous parametric downconversion
• spontaneous
• parametric
• downconversion
• SPDC
• Paul Kwiat
• waveguides
• nonlinear
• crystals
• PPKTP
• beam displacer
• Oak Ridge
• Periodically Poled KTP
• KTP
• polarization
• photons
• quantum teleportation
• teleportation
• quantum networking
• networking
• satellites
• drone

Statement dc:rights

• Copyright 2021 Kristina A. Meier. All Rights Reserved.

Language dc:language

en

Handle dc:identifier

http://hdl.handle.net/2142/112980

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/112980