{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/132620"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/132620","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Multidimensional fiber quantum light sources and their applications","abstract":"Optical fibers support discrete transverse spatial modes that have potential for applications in high-dimensional quantum information processing. When paired with other degrees of freedom such as spectral modes, fibers become a versatile platform for studying multidimensional quantum systems. In this thesis, we present our recent progress in fundamental studies and applications of multidimensional optical fiber-based quantum light sources. We study spontaneous four-wave mixing processes in optical fibers that can create photon pairs correlated in spatio-spectral degrees of freedom. Utilizing spatial light modulators, we show control over individual spontaneous four-wave mixing processes through precise beam shaping of the pump spatial mode. Employing stimulated emission and spatio-spectral control of the seed beam, we carefully characterize the photon pairs created from few-mode polarization-maintaining fibers. We develop spatial-mode quantum state tomography and quantum state estimation techniques and take steps towards generating spatial-mode-entangled photon pairs in a cross-spliced few-mode polarization-maintaining fiber. We elaborate on the spectro-temporal distinguishabilities that can challenge the entanglement generation and potential experimental remedies that can minimize them. Furthermore, we explore the scalability of our scheme in a ring-core fiber platform that is capable of supporting more than thirty different high-dimensional orbital angular momentum states. We control the spectral correlation of these photon pairs and measure their quantum source properties such as coincidence-to-accidental ratio and heralded second-order correlation function. Additionally, with a commercial telecom polarization-maintaining fiber, we conduct spectral and coincidence measurements to investigate and confirm the generation of telecom-infrared photon pairs that can be potentially integrated into quantum network infrastructure. Finally, we study the application of our fiber photon-pair sources for quantum imaging of biomolecules through scattering-robust fluorescence ghost imaging.","abstract_html":"Optical fibers support discrete transverse spatial modes that have potential for applications in high-dimensional quantum information processing. When paired with other degrees of freedom such as spectral modes, fibers become a versatile platform for studying multidimensional quantum systems. In this thesis, we present our recent progress in fundamental studies and applications of multidimensional optical fiber-based quantum light sources. We study spontaneous four-wave mixing processes in optical fibers that can create photon pairs correlated in spatio-spectral degrees of freedom. Utilizing spatial light modulators, we show control over individual spontaneous four-wave mixing processes through precise beam shaping of the pump spatial mode. Employing stimulated emission and spatio-spectral control of the seed beam, we carefully characterize the photon pairs created from few-mode polarization-maintaining fibers. We develop spatial-mode quantum state tomography and quantum state estimation techniques and take steps towards generating spatial-mode-entangled photon pairs in a cross-spliced few-mode polarization-maintaining fiber. We elaborate on the spectro-temporal distinguishabilities that can challenge the entanglement generation and potential experimental remedies that can minimize them. Furthermore, we explore the scalability of our scheme in a ring-core fiber platform that is capable of supporting more than thirty different high-dimensional orbital angular momentum states. We control the spectral correlation of these photon pairs and measure their quantum source properties such as coincidence-to-accidental ratio and heralded second-order correlation function. Additionally, with a commercial telecom polarization-maintaining fiber, we conduct spectral and coincidence measurements to investigate and confirm the generation of telecom-infrared photon pairs that can be potentially integrated into quantum network infrastructure. Finally, we study the application of our fiber photon-pair sources for quantum imaging of biomolecules through scattering-robust fluorescence ghost imaging.","abstract_has_math":false,"creators":["Kim, Dong Beom"],"institution":"University of Illinois Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Lorenz, Virginia O","Kwiat, Paul G","Goldschmidt, Elizabeth A","Garay-Palmett, Karina","Backlund, Mikael P","U'ren, Alfred B","Ramachandran, Siddharth"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2025,"date_issued":"2025-12","date_published":"2025-12","updated_at":"2026-07-22T22:25:07Z","subjects":["multidimensional","optical fiber","quantum information","photon-pair source","spontaneous four-wave mixing","SFWM","entanglement","transverse spatial mode","SLM","quantum communication","quantum metrology"],"languages":["en"],"rights":["Copyright 2025 Dong Beom Kim"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2142/132620","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Lorenz, Virginia O","Kwiat, Paul G","Goldschmidt, Elizabeth A","Garay-Palmett, Karina","Backlund, Mikael P","U'ren, Alfred B","Ramachandran, Siddharth"]},{"key":"dc:creator","label":"Author","values":["Kim, Dong Beom"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2025-12","2025-09-04"]},{"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 Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["multidimensional","optical fiber","quantum information","photon-pair source","spontaneous four-wave mixing","SFWM","entanglement","transverse spatial mode","SLM","quantum communication","quantum metrology"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2025 Dong Beom Kim"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://hdl.handle.net/2142/132620"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Optical fibers support discrete transverse spatial modes that have potential for applications in high-dimensional quantum information processing. When paired with other degrees of freedom such as spectral modes, fibers become a versatile platform for studying multidimensional quantum systems. In this thesis, we present our recent progress in fundamental studies and applications of multidimensional optical fiber-based quantum light sources. We study spontaneous four-wave mixing processes in optical fibers that can create photon pairs correlated in spatio-spectral degrees of freedom. Utilizing spatial light modulators, we show control over individual spontaneous four-wave mixing processes through precise beam shaping of the pump spatial mode. Employing stimulated emission and spatio-spectral control of the seed beam, we carefully characterize the photon pairs created from few-mode polarization-maintaining fibers. We develop spatial-mode quantum state tomography and quantum state estimation techniques and take steps towards generating spatial-mode-entangled photon pairs in a cross-spliced few-mode polarization-maintaining fiber. We elaborate on the spectro-temporal distinguishabilities that can challenge the entanglement generation and potential experimental remedies that can minimize them. Furthermore, we explore the scalability of our scheme in a ring-core fiber platform that is capable of supporting more than thirty different high-dimensional orbital angular momentum states. We control the spectral correlation of these photon pairs and measure their quantum source properties such as coincidence-to-accidental ratio and heralded second-order correlation function. Additionally, with a commercial telecom polarization-maintaining fiber, we conduct spectral and coincidence measurements to investigate and confirm the generation of telecom-infrared photon pairs that can be potentially integrated into quantum network infrastructure. Finally, we study the application of our fiber photon-pair sources for quantum imaging of biomolecules through scattering-robust fluorescence ghost imaging.","Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-12-01","The student, Dong Beom Kim, accepted the attached license on 2025-09-03 at 16:09.","The student, Dong Beom Kim, submitted this Dissertation for approval on 2025-09-03 at 16:35.","This Dissertation was approved for publication on 2025-09-04 at 15:46.","DSpace SAF Submission Ingestion Package generated from Vireo submission #22789 on 2026-02-19 at 18:45:22"]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Multidimensional fiber quantum light sources and their applications"]}]}],"canonical_facts":{"dc:contributor":["Lorenz, Virginia O","Kwiat, Paul G","Goldschmidt, Elizabeth A","Garay-Palmett, Karina","Backlund, Mikael P","U'ren, Alfred B","Ramachandran, Siddharth"],"dc:creator":["Kim, Dong Beom"],"dc:date":["2025-12","2025-09-04"],"dc:description":["Optical fibers support discrete transverse spatial modes that have potential for applications in high-dimensional quantum information processing. When paired with other degrees of freedom such as spectral modes, fibers become a versatile platform for studying multidimensional quantum systems. In this thesis, we present our recent progress in fundamental studies and applications of multidimensional optical fiber-based quantum light sources. We study spontaneous four-wave mixing processes in optical fibers that can create photon pairs correlated in spatio-spectral degrees of freedom. Utilizing spatial light modulators, we show control over individual spontaneous four-wave mixing processes through precise beam shaping of the pump spatial mode. Employing stimulated emission and spatio-spectral control of the seed beam, we carefully characterize the photon pairs created from few-mode polarization-maintaining fibers. We develop spatial-mode quantum state tomography and quantum state estimation techniques and take steps towards generating spatial-mode-entangled photon pairs in a cross-spliced few-mode polarization-maintaining fiber. We elaborate on the spectro-temporal distinguishabilities that can challenge the entanglement generation and potential experimental remedies that can minimize them. Furthermore, we explore the scalability of our scheme in a ring-core fiber platform that is capable of supporting more than thirty different high-dimensional orbital angular momentum states. We control the spectral correlation of these photon pairs and measure their quantum source properties such as coincidence-to-accidental ratio and heralded second-order correlation function. Additionally, with a commercial telecom polarization-maintaining fiber, we conduct spectral and coincidence measurements to investigate and confirm the generation of telecom-infrared photon pairs that can be potentially integrated into quantum network infrastructure. Finally, we study the application of our fiber photon-pair sources for quantum imaging of biomolecules through scattering-robust fluorescence ghost imaging.","Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-12-01","The student, Dong Beom Kim, accepted the attached license on 2025-09-03 at 16:09.","The student, Dong Beom Kim, submitted this Dissertation for approval on 2025-09-03 at 16:35.","This Dissertation was approved for publication on 2025-09-04 at 15:46.","DSpace SAF Submission Ingestion Package generated from Vireo submission #22789 on 2026-02-19 at 18:45:22"],"dc:format":["application/pdf"],"dc:identifier":["https://hdl.handle.net/2142/132620"],"dc:language":["en"],"dc:rights":["Copyright 2025 Dong Beom Kim"],"dc:subject":["multidimensional","optical fiber","quantum information","photon-pair source","spontaneous four-wave mixing","SFWM","entanglement","transverse spatial mode","SLM","quantum communication","quantum metrology"],"dc:title":["Multidimensional fiber quantum light sources and their applications"],"dc:type":["text","Thesis"],"thesis:degree_discipline":["Physics"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:07Z"}