{"id":4010,"date":"2026-05-01T08:11:30","date_gmt":"2026-05-01T13:11:30","guid":{"rendered":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/?post_type=tribe_events&#038;p=4010"},"modified":"2026-05-01T08:11:30","modified_gmt":"2026-05-01T13:11:30","slug":"lans-seminar-201","status":"publish","type":"tribe_events","link":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/event\/lans-seminar-201\/","title":{"rendered":"LANS Seminar"},"content":{"rendered":"<p><strong>Seminar Title: <\/strong>Tackling Heterogeneity in Fault-Tolerant Quantum Systems<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Speaker<\/strong>: Kate Smith, Assistant Professor of Computer Science, Northwestern University<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Date:<\/strong> Thursday, May 28, 2026<\/p>\n<p><strong>Time:<\/strong>\u00a02:30 PM-3:30 PM (In-Person)<\/p>\n<p><strong>Location:<\/strong> Hybrid, Bldg. 240, Conference Room 4301<\/p>\n<p><strong>Host:<\/strong> Jeff Larson<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Description<\/strong>: Achieving fault tolerance on quantum devices requires not just powerful error correcting codes, but practical strategies for deploying them on imperfect hardware and in complex architectures. This talk focuses on surface code quantum error correction (QEC) techniques that account for and exploit heterogeneity, whether that arises from nonuniform noise and fabrication defects or from architectural structure such as hierarchies in QRAM. We begin by studying how physical qubit imperfections and defect distributions affect logical performance, introducing frameworks for quantifying acceptable levels of defectiveness, adapting syndrome circuits, and selecting modular chiplet\u200b\u00a0layouts to minimize logical failure and qubit overhead. Next, we present architectural techniques that leverage heterogeneous error protection, such as assigning variable code distances to different logical roles to balance fidelity against resource cost. Through analytical and simulation-based analysis, reductions in physical qubit overhead and improvements in QRAM fidelity with heterogeneous surface code deployments will be shown. By bridging device-level variation with system level design, the presented techniques offer a path toward more efficient and resilient fault tolerant quantum computing in the presence of resource scarcity and hardware heterogeneity.<\/p>\n<p>&nbsp;<\/p>\n<div class=\"tribe-events-single-event-description tribe-events-content\">\n<p><b>Bio: <\/b>Kate is an Assistant Professor of Computer Science at Northwestern University. She joined Northwestern from Infleqtion, where she acted as a quantum software manager directing projects related to optimized compilation, error mitigation, and simulation of quantum programs on a wide range of quantum technology platforms. Prior to Infleqtion, Kate was an IBM and Chicago Quantum Exchange (CQE) postdoctoral scholar at the University of Chicago Department of Computer Science. She earned her Ph.D. in Electrical Engineering from Southern Methodist University in December 2019.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><em>Please note that the meeting URL for this event can be seen on the cels-seminars website which requires an Argonne login.<\/em><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Seminar Title: Tackling Heterogeneity in Fault-Tolerant Quantum Systems &nbsp; Speaker: Kate Smith, Assistant Professor of Computer Science, Northwestern University &nbsp; Date: Thursday, May 28, 2026 Time:\u00a02:30 PM-3:30 PM (In-Person) Location: Hybrid, Bldg. 240, Conference Room 4301 Host: Jeff Larson &nbsp; &hellip; <a href=\"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/event\/lans-seminar-201\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":976,"featured_media":0,"template":"","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_tribe_events_status":"","_tribe_events_status_reason":"","footnotes":""},"tags":[],"tribe_events_cat":[2],"class_list":["post-4010","tribe_events","type-tribe_events","status-publish","hentry","tribe_events_cat-seminar","cat_seminar"],"acf":[],"_links":{"self":[{"href":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/wp-json\/wp\/v2\/tribe_events\/4010","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/wp-json\/wp\/v2\/tribe_events"}],"about":[{"href":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/wp-json\/wp\/v2\/types\/tribe_events"}],"author":[{"embeddable":true,"href":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/wp-json\/wp\/v2\/users\/976"}],"version-history":[{"count":1,"href":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/wp-json\/wp\/v2\/tribe_events\/4010\/revisions"}],"predecessor-version":[{"id":4012,"href":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/wp-json\/wp\/v2\/tribe_events\/4010\/revisions\/4012"}],"wp:attachment":[{"href":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/wp-json\/wp\/v2\/media?parent=4010"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/wp-json\/wp\/v2\/tags?post=4010"},{"taxonomy":"tribe_events_cat","embeddable":true,"href":"https:\/\/wordpress.cels.anl.gov\/lans-seminars\/wp-json\/wp\/v2\/tribe_events_cat?post=4010"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}