Should the Endless Frontier of Federal Science be Expanded?

Kavli Affiliate: Thomas Rosenbaum | First 5 Authors: David Baltimore, Robert Conn, William H Press, Thomas Rosenbaum, David N Spergel | Summary: Scientific research in the United States could receive a large increase in federal funding–up to 100 billion dollars over five years — if proposed legislation entitled the Endless Frontiers Act becomes law. This […]


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Impact of Semiconductor Band Tails and Band Filling on Photovoltaic Efficiency Limits

Kavli Affiliate: Harry A. Atwater | First 5 Authors: Joeson Wong, Stefan T. Omelchenko, Harry A. Atwater, , | Summary: The theoretical maximum efficiency of a solar cell is typically characterized by a detailed balance of optical absorption and emission for a semiconductor in the limit of unity radiative efficiency and an ideal step-function response […]


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Spatiotemporal Imaging of Thickness-Induced Band Bending Junctions

Kavli Affiliate: Harry A. Atwater | First 5 Authors: Joeson Wong, Artur R. Davoyan, Bolin Liao, Andrey Krayev, Kiyoung Jo | Summary: Van der Waals materials exhibit naturally passivated surfaces and can form versatile heterostructures, enabling observation of carrier transport mechanisms not seen in three-dimensional materials. Here we report observation of a "band bending junction", […]


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The Lack of Non-Thermal Motions in Galaxy Cluster Cores

Kavli Affiliate: Sunil Golwala | First 5 Authors: Jack Sayers, Mauro Sereno, Stefano Ettori, Elena Rasia, Weiguang Cui | Summary: We report the non-thermal pressure fraction (Pnt/Ptot) obtained from a three-dimensional triaxial analysis of 16 galaxy clusters in the CLASH sample using gravitational lensing (GL) data primarily from Subaru and HST, X-ray spectroscopic imaging from […]


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Superresolution Reconstruction of Severely Undersampled Point-spread Functions Using Point-source Stacking and Deconvolution

Kavli Affiliate: James Bock | First 5 Authors: Teresa Symons, Michael Zemcov, James Bock, Yun-Ting Cheng, Brendan Crill | Summary: Point-spread function (PSF) estimation in spatially undersampled images is challenging because large pixels average fine-scale spatial information. This is problematic when fine-resolution details are necessary, as in optimal photometry where knowledge of the illumination pattern […]


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Initial Design of a W-band Superconducting Kinetic Inductance Qubit (Kineticon)

Kavli Affiliate: Mohammad Mirhosseini | First 5 Authors: Farzad B. Faramarzi, Peter K. Day, Jacob Glasby, Sasha Sypkens, Marco Colangelo | Summary: Superconducting qubits are widely used in quantum computing research and industry. We describe a superconducting kinetic inductance qubit (and introduce the term Kineticon to describe it) operating at W-band frequencies with a nonlinear […]


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Building a fault-tolerant quantum computer using concatenated cat codes

Kavli Affiliate: Oskar Painter | First 5 Authors: Christopher Chamberland, Kyungjoo Noh, Patricio Arrangoiz-Arriola, Earl T. Campbell, Connor T. Hann | Summary: We present a comprehensive architectural analysis for a proposed fault-tolerant quantum computer based on cat codes concatenated with outer quantum error-correcting codes. For the physical hardware, we propose a system of acoustic resonators […]


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Prestrain-induced bandgap tuning in 3D-printed tensegrity-inspired lattice structures

Kavli Affiliate: Chiara Daraio | First 5 Authors: Kirsti Pajunen, Paolo Celli, Chiara Daraio, , | Summary: In this letter, we provide experimental evidence of bandgap tunability with global prestrain in additively-manufactured tensegrity-inspired lattice structures. These lattices are extremely lightweight and designed to exhibit a nonlinear compressive response that mimics that of a tensegrity structure. […]


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Resonant Interaction of Modulation-correlated Quantum Electron Wavepackets with Bound Electron States

Kavli Affiliate: Amnon Yariv | First 5 Authors: Avraham Gover, Bin Zhang, Du Ran, Reuven Ianconescu, Aharon Friedman | Summary: Free-Electron Bound-Electron Resonant Interaction (FEBERI) is the resonant inelastic interaction of periodically density-bunched free electrons with a quantum two level system. We present a comprehensive relativistic quantum mechanical theory for this interaction in a model […]


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