{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/122090"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/122090","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Integrated nonlinear photonic circuits for mediating and detecting photon-photon interactions","abstract":"Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-12-01","abstract_html":"Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-12-01","abstract_has_math":false,"creators":["Zhao, Mengdi"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Physics","degree_department":null,"school":null,"contributors":["Fang, Kejie","Lorenz, Virginia","Goldschmidt, Elizabeth","Kwiat, Paul"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2023,"date_issued":"2023-12","date_published":"2023-12","updated_at":"2026-07-22T22:25:00Z","subjects":["Nonlinear Photonics"],"languages":["en","eng"],"rights":["Copyright 2023 Mengdi Zhao"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2142/122090","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Fang, Kejie","Lorenz, Virginia","Goldschmidt, Elizabeth","Kwiat, Paul"]},{"key":"dc:creator","label":"Author","values":["Zhao, Mengdi"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2023-12","2023-08-07"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"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":["Nonlinear Photonics"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en","eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2023 Mengdi Zhao"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://hdl.handle.net/2142/122090"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-12-01","The student, Mengdi Zhao, accepted the attached license on 2023-07-30 at 16:12.","The student, Mengdi Zhao, submitted this Dissertation for approval on 2023-07-30 at 16:22.","This Dissertation was approved for publication on 2023-08-07 at 13:18.","DSpace SAF Submission Ingestion Package generated from Vireo submission #19789 on 2024-03-01 at 13:29:13","The development of a quantum platform that meets the requirements for quantum computation and quantum information has been a longstanding goal since the inception of the concepts. Photons have emerged as excellent candidates for carrying quantum information due to their inherent properties of cleanliness and resistance to decoherence. However, the lack of natural interactions between photons poses a challenge in achieving deterministic two-qubit gates. The creation of photon-photon interactions has therefore become of paramount importance both in the fields of fundamental physics and quantum technologies. While such interactions have been achieved using atomic-like quantum emitters strongly coupled to optical cavity modes, this approach presents fundamental challenges in terms of scalability and compatibility with quantum communications. In this dissertation, we propose a different approach that utilizes the bulk nonlinearity of dielectric materials. In the initial part of this dissertation, we focus on optimizing the second-order nonlinear coupling using a nonlinear InGaP photonic integrated circuit. Subsequently, I will introduce our approach of mediating and observing the photon-photon interactions. In our system, photons interact through weak χ(2) nonlinearity, resulting in the emergence of highly correlated quantum states of light. By carefully engineering the dissipation properties of the device, we can adjust the ratio between unscattered and scattered two-photon components in the output mode, leading to control over the photon statistics. We can achieve a wide range of quantum correlations, including repulsion, attraction, and tunneling behaviors. Our work paves the way for controlling quantum light by harnessing highly customizable weak bulk optical nonlinearities at the single-photon level. This breakthrough enables the generation of non-classical light with diverse statistical properties and also offers potential applications in nonlinear optical quantum information processing and quantum networking."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Integrated nonlinear photonic circuits for mediating and detecting photon-photon interactions"]}]}],"canonical_facts":{"dc:contributor":["Fang, Kejie","Lorenz, Virginia","Goldschmidt, Elizabeth","Kwiat, Paul"],"dc:creator":["Zhao, Mengdi"],"dc:date":["2023-12","2023-08-07"],"dc:description":["Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-12-01","The student, Mengdi Zhao, accepted the attached license on 2023-07-30 at 16:12.","The student, Mengdi Zhao, submitted this Dissertation for approval on 2023-07-30 at 16:22.","This Dissertation was approved for publication on 2023-08-07 at 13:18.","DSpace SAF Submission Ingestion Package generated from Vireo submission #19789 on 2024-03-01 at 13:29:13","The development of a quantum platform that meets the requirements for quantum computation and quantum information has been a longstanding goal since the inception of the concepts. Photons have emerged as excellent candidates for carrying quantum information due to their inherent properties of cleanliness and resistance to decoherence. However, the lack of natural interactions between photons poses a challenge in achieving deterministic two-qubit gates. The creation of photon-photon interactions has therefore become of paramount importance both in the fields of fundamental physics and quantum technologies. While such interactions have been achieved using atomic-like quantum emitters strongly coupled to optical cavity modes, this approach presents fundamental challenges in terms of scalability and compatibility with quantum communications. In this dissertation, we propose a different approach that utilizes the bulk nonlinearity of dielectric materials. In the initial part of this dissertation, we focus on optimizing the second-order nonlinear coupling using a nonlinear InGaP photonic integrated circuit. Subsequently, I will introduce our approach of mediating and observing the photon-photon interactions. In our system, photons interact through weak χ(2) nonlinearity, resulting in the emergence of highly correlated quantum states of light. By carefully engineering the dissipation properties of the device, we can adjust the ratio between unscattered and scattered two-photon components in the output mode, leading to control over the photon statistics. We can achieve a wide range of quantum correlations, including repulsion, attraction, and tunneling behaviors. Our work paves the way for controlling quantum light by harnessing highly customizable weak bulk optical nonlinearities at the single-photon level. This breakthrough enables the generation of non-classical light with diverse statistical properties and also offers potential applications in nonlinear optical quantum information processing and quantum networking."],"dc:format":["application/pdf"],"dc:identifier":["https://hdl.handle.net/2142/122090"],"dc:language":["en","eng"],"dc:rights":["Copyright 2023 Mengdi Zhao"],"dc:subject":["Nonlinear Photonics"],"dc:title":["Integrated nonlinear photonic circuits for mediating and detecting photon-photon interactions"],"dc:type":["text"],"thesis:degree_discipline":["Physics"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:00Z"}