The role of effective mass and long-range interactions in the band-gap renormalization of photo-excited semiconductors

Posted by dbos Caltech

Kavli Affiliate: Scott K. Cushing | First 5 Authors: Cian C. Reeves, Scott K. Cushing, Vojtech Vlcek, , | Summary: Understanding how to control changes in electronic structure and related dynamical renormalizations by external driving fields is the key for understanding ultrafast spectroscopy and applications in electronics. Here we focus on the band-gap’s modulation by […]


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Optimal sensing on an asymmetric exceptional surface

Posted by dbos Berkeley

Kavli Affiliate: Birgitta Whaley | First 5 Authors: Robert L. Cook, Liwen Ko, K. Birgitta Whaley, , | Summary: We study the connection between exceptional points (EPs) and optimal parameter estimation, in a simple system consisting of two counter-propagating traveling wave modes in a microring resonator. The unknown parameter to be estimated is the strength […]


Continue.. Optimal sensing on an asymmetric exceptional surface

Optimal sensing on an asymmetric exceptional surface

Posted by dbos Berkeley

Kavli Affiliate: Birgitta Whaley | First 5 Authors: Robert L. Cook, Liwen Ko, K. Birgitta Whaley, , | Summary: We study the connection between exceptional points (EPs) and optimal parameter estimation, in a simple system consisting of two counter-propagating traveling wave modes in a microring resonator. The unknown parameter to be estimated is the strength […]


Continue.. Optimal sensing on an asymmetric exceptional surface

The effect of boron incorporation on leakage and wake-up in ferroelectric Al_{1-x}Sc_xN

Posted by dbos Cornell

Kavli Affiliate: Debdeep Jena | First 5 Authors: Maike Gremmel, Chandrashekhar Prakash Savant, Debaditya Bhattacharya, Georg Schönweger, Debdeep Jena | Summary: This study explores the influence of boron incorporation on the structural and electrical properties of ferroelectric Aluminum Scandium Nitride (Al_{1-x}Sc_xN ) thin films, focusing on leakage currents, wake-up effects, and imprint behavior. Al_{1-x}Sc_xN films […]


Continue.. The effect of boron incorporation on leakage and wake-up in ferroelectric Al_{1-x}Sc_xN

Doubly robust omnibus sensitivity analysis of externally controlled trials with intercurrent events

Posted by dbos Berkeley

Kavli Affiliate: Xiang Zhang | First 5 Authors: Chenyin Gao, Xiang Zhang, Shu Yang, , | Summary: Externally controlled trials are crucial in clinical development when randomized controlled trials are unethical or impractical. These trials consist of a full treatment arm with the experimental treatment and a full external control arm. However, they present significant […]


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Improper Ferroelectricity at the Monolayer Limit

Posted by dbos Cornell

Kavli Affiliate: Darrell G. Schlom | First 5 Authors: Yilin Evan Li, Harikrishnan KP, Haidong Lu, Rachel A. Steinhardt, Megan E. Holtz | Summary: Ultrathin ferroelectric films with out-of-plane polarization and high Curie temperatures are key to miniaturizing electronic devices. Most ferroelectrics employed in devices are proper ferroelectrics, where spontaneous polarization is the primary order […]


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Step-by-step design guide of a cryogenic three-axis vector magnet

Posted by dbos Delft

Kavli Affiliate: Simon Groblacher | First 5 Authors: Gaia Da Prato, Yong Yu, Ronald Bode, Simon Gröblacher, | Summary: A tunable magnetic field at low temperatures is essential for numerous applications, including spintronics, magnetic resonance imaging, and condensed matter physics. While commercial superconducting vector magnets are available, they are complex, expensive, and often not adaptable […]


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Curvature-Controlled Polarization in Adaptive Ferroelectric Membranes

Posted by dbos Delft

Kavli Affiliate: Andrea D. Caviglia | First 5 Authors: Greta Segantini, Ludovica Tovaglieri, Chang Jae Roh, Chih-Ying Hsu, Seongwoo Cho | Summary: In this study, we explore the ferroelectric domain structure and mechanical properties of PbTiO$_3$-based membranes, which develops a well-ordered and crystallographic-oriented ripple pattern upon release from their growth substrate. The ferrolectric domain structure […]


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Prismatic-Bending Transformable (PBT) Joint for a Modular, Foldable Manipulator with Enhanced Reachability and Dexterity

Posted by dbos Berkeley

Kavli Affiliate: Xiang Zhang | First 5 Authors: Jianshu Zhou, Junda Huang, Boyuan Liang, Xiang Zhang, Xin Ma | Summary: Robotic manipulators, traditionally designed with classical joint-link articulated structures, excel in industrial applications but face challenges in human-centered and general-purpose tasks requiring greater dexterity and adaptability. Addressing these limitations, we introduce the Prismatic-Bending Transformable (PBT) […]


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Scalable and Site-Specific Frequency Tuning of Two-Level System Defects in Superconducting Qubit Arrays

Posted by dbos Berkeley

Kavli Affiliate: Irfan Siddiqi | First 5 Authors: Larry Chen, Kan-Heng Lee, Chuan-Hong Liu, Brian Marinelli, Ravi K. Naik | Summary: State-of-the-art superconducting quantum processors containing tens to hundreds of qubits have demonstrated the building blocks for realizing fault-tolerant quantum computation. Nonetheless, a fundamental barrier to scaling further is the prevalence of fluctuating quantum two-level […]


Continue.. Scalable and Site-Specific Frequency Tuning of Two-Level System Defects in Superconducting Qubit Arrays