"Analyzing the Effects of Atmospheric Turbulence on Polarization-Entang" by Noah S. Everett

Date of Award

3-2024

Document Type

Thesis

Degree Name

Master of Science

Department

Department of Electrical and Computer Engineering

First Advisor

Anil K. Patnaik, PhD

Abstract

To help in building a quantum-based communication link, we experimentally designed a system to simulate atmospheric turbulence and characterize its effects on a polarization-entangled photon-pair source. The simulated turbulence is constructed using two afocal optical systems with a phase plate inserted in each to mimic both weak and strong atmospheric turbulence respectively. After propagation, quantum state tomography (QST) is performed on each pair to reconstruct the density matrix of the pair’s overall polarization state. In characterization of the simulated turbulence, we were able to reach strengths up to a D/r0 of 18.2, which begins to approach the strong turbulent regime. Even in such strengths, the tomography results indicate a high level of resilience, with only marginal change in its polarization angle through the turbulence.

AFIT Designator

AFIT-ENP-MS-24-M-038

Comments

A 12-month embargo was observed for posting this work on AFIT Scholar.

Distribution Statement A, Approved for Public Release. PA case number on file.

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