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Feel free to click around and explore! https://www.koubitlab.physics.illinois.edu/home daily 1.0 2025-06-18 https://www.koubitlab.physics.illinois.edu/research daily 0.75 2025-05-13 https://images.squarespace-cdn.com/content/v1/5fb6fa40c8efd17029131aa2/1606702975146-70A00VDBVF1PR6JFEGTC/Screen+Shot+2020-11-29+at+8.22.37+PM.png Research - Novel superconducting circuits Superconducting circuits are a flexible platform for engineering strongly-interacting systems. Our research is focused on building superconducting circuits with multiple degrees of freedom that can act as qubits protected from various types of noise or as quantum simulators of interacting materials. Figure: Circuit diagram, optical image, and spectrum of a strongly-coupled fluxonium molecule https://images.squarespace-cdn.com/content/v1/5fb6fa40c8efd17029131aa2/1606701972897-P0BFI3HKU8YKA8ZZAW2R/research_hfluxoniumspectra.jpg Research - Hybrid superconducting circuits We are coupling topological and semiconducting materials to superconducting circuits. Coherent superconducting qubits offer the possibility of probing these materials with extremely fine energy resolution and can also act as ancillas for readout and manipulation of topological and semiconductor-based qubits. Figure: Scanning-electron microscope images of a fluxonium coupled to a semiconducting nanowire. https://images.squarespace-cdn.com/content/v1/5fb6fa40c8efd17029131aa2/1609256959857-U2ZSYRCWQPTNFCA4RDNP/graphene-01-01.png Research - Probing topological materials Topological materials host excitations such as fractionalized quasiparticles that reflect the topological nature of their ground states. We are building scanning resonator-based sensors to investigate the electronic properties of superconducting and topological materials at high and low frequencies. Figure: Compressibility of bilayer graphene subject to high magnetic fields measured with a scanning single-electron transistor. https://www.koubitlab.physics.illinois.edu/members daily 0.75 2026-02-03 https://images.squarespace-cdn.com/content/v1/5fb6fa40c8efd17029131aa2/1609526585397-IJST7BE2GBTRQVXK6YXF/angela.jpg Members - PI: Angela Kou Tobias Keene, D.D.S. Hailing from Richmond, Virginia, Dr. Tobias Keene brings a bit of unabashed Southern hospitality to all his patients. He moved to Washington, D.C. over thirty years ago as a freshman at Ivy College. Right after graduation, he attended World University’s School of Dentistry. Before opening Keene Dental in 1994, he worked for free clinics and some of the finest practices in the District. 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Our research is focused on building superconducting circuits with multiple degrees of freedom that can act as qubits protected from various types of noise or as quantum simulators of interacting materials. Figure: Circuit diagram, optical image, and spectrum of a strongly-coupled fluxonium molecule Related publications https://images.squarespace-cdn.com/content/v1/5fb6fa40c8efd17029131aa2/1606701972897-P0BFI3HKU8YKA8ZZAW2R/research_hfluxoniumspectra.jpg Research (Copy) - Hybrid superconducting circuits We are coupling topological and semiconducting materials to superconducting circuits. Coherent superconducting qubits offer the possibility of probing these materials with extremely fine energy resolution and can also act as ancillas for readout and manipulation of topological and semiconductor-based qubits. Figure: Scanning-electron microscope images of a fluxonium coupled to a semiconducting nanowire. Related publications https://images.squarespace-cdn.com/content/v1/5fb6fa40c8efd17029131aa2/1609256959857-U2ZSYRCWQPTNFCA4RDNP/graphene-01-01.png Research (Copy) - Probing topological materials Topological materials host excitations such as fractionalized quasiparticles that reflect the topological nature of their ground states. We are building scanning resonator-based sensors to investigate the electronic properties of topological materials at high and low frequencies. Figure: Compressibility of bilayer graphene subject to high magnetic fields measured with a scanning single-electron transistor. Related publications