Physics Colloquium on Quantum Devices Based on Two-Dimensional Materials
Wednesday, January 25, 2023 1:45 PM
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Crow Hall, St. Louis, MO 63105
https://artsci.wustl.edu/events/physics-colloquium-hugh-churchill-quantum-devices-based-two-dimensional-materialsIn this talk I will describe a few collaborative efforts between my lab and others to create novel qubits that are fabricated using both old materials and a newer one. First, I will describe the context of this work against the background of the global effort to create larger and more powerful quantum processors, and then I will discuss two categories of new kinds of qubits that we are developing. The first one uses materials that have been available for decades (InAs and Ge) to create voltage-controlled superconducting qubits. The second one uses a more recently discovered material (atomically thin WSe2) to create qubits for which the two states used for computation are the so-called valley pseudospin degree of freedom that is available to electrons in certain monolayer crystals. I will conclude with a brief description of the MonArk Quantum Foundry, a broadly collaborative effort across the US Heartland that aims to accelerate research progress in 2D quantum materials and devices.
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