{ "132439-21870950": { "datetime_modified":"20250214T071039", "datetime_start":"20250220T110000", "datetime_end":"20250220T120000", "has_end_time":1, "date_start":"2025-02-20", "date_end":"2025-02-20", "time_start":"11:00:00", "time_end":"12:00:00", "time_zone":"America\/Detroit", "event_title":"Quantum Research Institute Seminar | Cavity electrodynamics of integrated quantum materials", "occurrence_title":"", "combined_title":"Quantum Research Institute Seminar | Cavity electrodynamics of integrated quantum materials: Hope Bretscher", "event_subtitle":"Hope Bretscher", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Abstract.\r\nQuantum materials embedded into devices have been observed to host a wide variety of quantum phases that can exhibit intriguing properties, like dissipationless transport, magnetism, or fractionalized carriers. Understanding the conditions under which these phenomena emerge is of great fundamental interest and important for deterministically designing materials for new applications. In these device-integrated quantum materials, the macroscopic responses are not solely due to the intrinsic interactions of the materials. Instead, these interactions, and the resulting ground state physics, are modified by the specifics of the device integration.\r\n\r\nIn this talk, I will discuss how integrated quantum materials form sub-wavelength cavities due to their micron-size, confining low-energy light into the near field. I will introduce time-domain on-chip THz spectroscopy as a technique to capture the cavity electrodynamics, probing the response of integrated materials to light on their natural frequency (~THz\/meV) scales. This technique overcomes the mismatch between free-space THz wavelengths (~300 um) and sample size (~10 um) by measuring the optical conductivity on-chip, in the near field, and at finite momenta. I will illustrate how the properties of integrated quantum materials, such as gate-tunable van der Waals heterostructures, can be modified and controlled due to cavity effects. Using on-chip THz spectroscopy, I observed light-matter hybridization in a gate-tunable van der Waals heterostructure, between plasmonic self cavity modes in monolayer graphene and a graphite electrostatic gate. This hybridization can be tuned into the ultrastrong coupling regime using electrostatic gating and the cavity geometry. In this regime, light-matter coupling can be wielded to engineer new thermodynamic ground states. Together, these results lay a path for utilizing integrated quantum materials in novel THz quantum technologies. \r\n\r\n\r\nBio.\r\nHope Bretscher is currently a Marie Sk\u0142odowska-Curie postdoctoral fellow at the Max Planck Institute for the Structure and Dynamics of Matter, in Hamburg Germany, where she investigates the low-energy electrodynamics of 2D materials. Originally from St. Louis Missouri, Hope received her BA in physics from the University of Chicago. Funded by a Marshall Scholarship, she pursued a master\u2019s degree in Science and Technology studies from the University of Edinburgh, before attaining her PhD in 2021 on ultrafast dynamics in vdW materials from the University of Cambridge.", "occurrence_notes":"https:\/\/umich.zoom.us\/j\/98980765496", "guid":"132439-21870950@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/132439", "building_id":"1000167", "building_name":"West Hall", "campus_maps_id":"163", "room":"411", "location_name":"West Hall", "has_livestream":1, "livestream_type":"zoom", "livetream_require_login":0, "livestream_id":"98980765496", "livestream_link":"https:\/\/umich.zoom.us\/j\/98980765496", "cost":"", "tags":["Chemistry","Electrical Engineering And Computer Science","Physics","Quantum","Astronomy"], "website":"", "sponsors":[ { "group_name":"Quantum Research Institute", "group_id":"5043", "website":"" }, { "group_name":"Department of Physics", "group_id":"1965", "website":"" }, { "group_name":"Applied Physics", "group_id":"3606", "website":"" }, { "group_name":"Department of Chemistry", "group_id":"3761", "website":"https:\/\/lsa.umich.edu\/chem" }, { "group_name":"Materials Science and Engineering", "group_id":"3942", "website":"" }, { "group_name":"Electrical Engineering and Computer Science", "group_id":"3989", "website":"" }, { "group_name":"Quantum Research Institute", "group_id":"5034", "website":"" } ], "image_url":"", "styled_images":{ "event_thumb":"", "event_large":"", "event_large_2x":"", "event_large_lightbox":"", "group_thumb":"", "group_thumb_square":"", "group_large":"", "group_large_lightbox":"", "event_large_crop":"", "event_list":"", "event_list_2x":"", "event_grid":"", "event_grid_2x":"", "event_feature_large":"", "event_feature_thumb":"" }, "occurrence_count":1, "first_occurrence":21870950 } , "122384-21848843": { "datetime_modified":"20240620T181506", "datetime_start":"20250220T110200", "datetime_end":"20250220T170000", "has_end_time":1, "date_start":"2025-02-20", "date_end":"2025-02-20", "time_start":"11:02:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"Michelle Hinojosa: Logcabins", "occurrence_title":"", "combined_title":"Michelle Hinojosa: Logcabins", "event_subtitle":"", "event_type":"Exhibition", "event_type_id":"7", "description":"Stamps Gallery commissioned Michelle Hinojosa (MFA, 2023) to reimagine the pillars on Division Street that flank the Gallery. Hinojosa has created log cabin quilts to adorn the columns in front of Stamps Gallery. The log cabin quilts traditionally represent the warm hearth at the center of a home. This installation reflects on the interplay between home, placemaking, labor, and intergenerational memories of migration. Rather than quilting cotton designed to softly embrace the body, these quilts are sewn from outdoor grade, UV-resistant polyester. The quilt is an ode to Hinojosa\u2019s grandmother who illegally crossed the US\/Mexico border holding her babies and her quilts. As she and her family drove across the United States to work in the fields of the Salinas Valley, the quilts offered a safe space for her and her family. Hinojosa celebrates their resilience to her grandmother and elders while also drawing attention to precarity and violence experienced by refugees and migrants crossing the US-Mexico border in our present today.\nArtist\u2019s bio:\nMichelle Inez Hinojosa is an artist, educator, and researcher whose work is informed by Indigenous and Latine\/x\/a\/o studies. Born and raised in Texas, she earned her Bachelor of Fine Arts degree in both drawing and painting and art education with a minor in art history at the University of North Texas. She holds a Master of Fine Arts from the University of Michigan. She works with quilting, bead weaving, embroidery, jewelry, transparent film installations, painting, ceramics, and sculpture to honor and explore the history of migration in her family and humanize the current discourse around migration still occurring at the southern border. Alongside her artwork she maintains a writing practice to re-story, re-make, and re-claim the often subordinated narratives of Latinx, Chicanx, Mexican, and Texican peoples. \n\nRecently, Hinojosa was named an inaugural Creative Careers Artist in Residence at the University of Michigan, she has also attended residencies at Mildred's Lane (Pennsylvania), Anderson Ranch Art Center (Aspen, CO) and The Cedars Union (Dallas, TX). 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