BEGIN:VCALENDAR VERSION:2.0 CALSCALE:GREGORIAN PRODID:iCalendar-Ruby BEGIN:VEVENT CATEGORIES:Lectures & Presentations DESCRIPTION:The Nanoscale and Quantum Phenomena Institute (NQPI) Seminar Se ries is pleased to welcome Perry Corbett\, Miami University\, as our featur ed speaker on Thursday\, February 26 at 4:10 p.m. All seminars take place i n CLIPPINGER 194 and are also accessible virtually via Teams.\n\n \n\nTitle : Microscopy at the Quantum Edge: Imaging Topological States\, Superconduct ors\, and Skyrmions\n\n \n\nAbstract: Condensed matter and nanostructured s ystems manifesting quantum phenomena are strongly anticipated to become dis ruptive technologies in sensors\, imaging\, computation\, networking\, and telecommunications. Single defect centers\, topological insulators and semi metals\, rare-earth ions\, doped silicon\, single optically active semicond uctor quantum dots\, superconducting thin films\, and 2D materials have all shown promising properties for quantum technologies\, such as long spin co herence times\, narrow optical transitions\, and bright single-photon emiss ion\, robustness to scattering\, and scalability. However\, each system pre sents unique materials challenges. To demonstrate viability as a long-term approach to realizing quantum advantage\, gate fidelities and quantum coher ence timescales still need to improve by orders of magnitude. Thus\, a clea r imperative is to produce quantum materials with minimized sources of loss \, which fundamentally requires a deep dive into the materials science behi nd these materials\, heterostructures\, and hosting environments.\n\n \n\nT he Corbett Research Group uses epitaxial thin-film growth to engineer novel quantum systems and advanced functional microscopy techniques to investiga te structure–property–device relationships. Our work focuses on three key c lasses of materials: topological electronic systems (e.g.\, topological ins ulators\, Dirac/Weyl semimetals)\, magnetic systems hosting skyrmions\, and superconductors for transmon qubits.\n\n \n\nIn topological electronic sys tems\, we examine materials with nontrivial band structures and symmetry-pr otected surface states that produce unconventional transport and optical ph enomena. A particular focus is on higher-order topological (HOT) phases\, w hich support boundary modes in two or more dimensions below the bulk\, such as 0D corner states in 2D and 1D hinge states in 3D structures. These phas es require precise control over both internal symmetries and mesoscale morp hology.\n\n \n\nThe second area focuses on superconducting materials for tr ansmon qubits. We study the relationship among growth conditions\, structur al quality\, and device performance\, particularly in mitigating two-level- system losses that limit coherence. We demonstrate our highest-quality epit axial films and map the critical growth phase diagram that enables them. Th is diagram identifies the conditions needed to control polycrystallinity an d suppress β-Ta formation. It also provides a route to controlled oxygen in corporation that is relevant to loss mechanisms in superconducting circuits .\n\n \n\nThe third thrust involves developing skyrmion-hosting materials t o achieve sub-10 nm skyrmions\, which begin to approach the limits where qu antum entanglement can occur between skyrmions. At this length scale\, morp hology and defect structures play a critical role in their size and stabili ty. These properties are coupled to local crystalline grains\, which can co nfine skyrmion dimensions and point to interfacial control of skyrmion life time.\n\n \n\nTogether\, these results show how local probes and materials- by-design turn microstructure into an engineering knob for quantum function ality. DTEND:20260226T220000Z DTSTAMP:20260419T211349Z DTSTART:20260226T211000Z GEO:39.322604;-82.099286 LOCATION:Clippinger Laboratories\, 194 SEQUENCE:0 SUMMARY:NQPI Seminar 2/26/2026 - Perry Corbett UID:tag:localist.com\,2008:EventInstance_52029046201341 URL:https://calendar.ohio.edu/event/nqpi-seminar-2262026-perry-corbett END:VEVENT END:VCALENDAR