2026-09-22T12:17:16Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/109578 2023-07-11 col_2142_5131 col_2142_8859 com_2142_5130 com_2142_8858 com_2142_234

Kwiat, Paul Gadway, Bryce Abbamonte, Peter Faulkner, Thomas Chapman, Joseph Corbett 2021-03-05T21:45:30Z 2021-03-05T21:45:30Z 2023-03-05T21:47:41Z 2020-11-16 2020-12 "To build a global quantum communication network, low-transmission, fiber-based communication channels can be supplemented by using a free-space channel between a satellite and a ground station on Earth. To this end, we have developed a system that generates hyperentangled photonic ""ququarts'' and measures them to execute multiple quantum communication protocols of interest, including superdense teleportation and high-dimensional entanglement-based quantum key distribution (QKD). To this same end, we also have developed another system to execute entanglement swapping, a protocol required for a fully functional quantum network, while in orbit. Our characterization of SDT shows an average fidelity of 0.94+\-0.02, with a phase resolution of ~7 degrees, allowing reliable transmission of >100,000 distinguishable quantum states. We also demonstrated the ability to compensate for the Doppler shift from satellite motion and simulated the event rate in a satellite-to-Earth implementation. Additionally, we implemented an entanglement-based QKD protocol developed by Bennett, Brassard, and Mermin in 1992 (BBM92), achieving quantum bit error rates (QBER) below 2%. More importantly, we demonstrate low QBER execution of a higher dimensional hyperentanglement-based QKD protocol that we developed and compared its performance directly to BBM92. Finally, we designed and have started constructing a system to implement an orbit-robust implementation of entanglement swapping. The detailed system engineering of the hardware involved is presented and preliminary results are discussed." Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2022-12-01 The student, Joseph Chapman, accepted the attached license on 2020-11-13 at 11:20. The student, Joseph Chapman, submitted this Dissertation for approval on 2020-11-13 at 11:42. This Dissertation was approved for publication on 2020-11-16 at 14:59. DSpace SAF Submission Ingestion Package generated from Vireo submission #15880 on 2021-03-04 at 16:31:32 Made available in DSpace on 2021-03-05T21:45:30Z (GMT). No. of bitstreams: 4 CHAPMAN-DISSERTATION-2020.pdf: 32152759 bytes, checksum: 94d9be2eaab1bcf22ea5237c77093204 (MD5) JChapman Thesis Files.zip: 157899860 bytes, checksum: 884b79d25da6c323a337fbc0802ab17b (MD5) LICENSE.txt: 4211 bytes, checksum: 7923ed682bcc1ed283244adbd4e0a811 (MD5) PROQUEST_LICENSE.txt: 4557 bytes, checksum: 18b85d3bee962b08617bfa6eebb8f303 (MD5) Previous issue date: 2020-11-16 Embargo set by: Seth Robbins for item 117283 Lift date: 2023-03-05T21:45:47Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system Embargo set by: Seth Robbins for item 117283 Lift date: 2023-03-05T21:47:41Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system Author requested closed access (OA after 2yrs) in Vireo ETD system Limited application/pdf http://hdl.handle.net/2142/109578 en Copyright 2020 Joseph Chapman quantum communication quantum entanglement hyperentanglement non-linear optics quantum key distribution superdense teleportation quantum state tomography spontaneous parametric down-conversion Towards optical quantum communication in space text Thesis Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.