{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/109578"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/109578","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Towards optical quantum communication in space","abstract":"\"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.\"","abstract_html":""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."","abstract_has_math":false,"creators":["Chapman, Joseph Corbett"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Kwiat, Paul","Gadway, Bryce","Abbamonte, Peter","Faulkner, Thomas"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2021,"date_issued":"2021-03-05T21:45:30Z","date_published":"2021-03-05T21:45:30Z","updated_at":"2026-07-22T22:24:50Z","subjects":["quantum communication","quantum entanglement","hyperentanglement","non-linear optics","quantum key distribution","superdense teleportation","quantum state tomography","spontaneous parametric down-conversion"],"languages":["en"],"rights":["Copyright 2020 Joseph Chapman"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/109578","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Kwiat, Paul","Gadway, Bryce","Abbamonte, Peter","Faulkner, Thomas"]},{"key":"dc:creator","label":"Author","values":["Chapman, Joseph Corbett"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2021-03-05T21:45:30Z","2023-03-05T21:47:41Z","2020-11-16","2020-12"]},{"key":"dc:type","label":"Dc Type","values":["text","Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Physics"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["quantum communication","quantum entanglement","hyperentanglement","non-linear optics","quantum key distribution","superdense teleportation","quantum state tomography","spontaneous parametric down-conversion"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2020 Joseph Chapman"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/109578"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["\"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). 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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). 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