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

Meier, Kristina A.

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https://hdl.handle.net/2142/112980 Copy

Description

Title

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

Author(s)

Meier, Kristina A.

Issue Date

2021-07-02

Director of Research (if dissertation) or Advisor (if thesis)

Kwiat, Paul G

Doctoral Committee Chair(s)

Lorenz, Virginia

Committee Member(s)

• Madhavan, Vidya
• Goldschmidt, Elizabeth

Department of Study

Physics

Discipline

Physics

Degree Granting Institution

University of Illinois at Urbana-Champaign

Degree Name

Ph.D.

Degree Level

Dissertation

Keyword(s)

• 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

Abstract

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.

Graduation Semester

2021-08

Type of Resource

Thesis

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

Copyright and License Information

Copyright 2021 Kristina A. Meier. All Rights Reserved.

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