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This paper proposes a current trajectory control strategy considering cross coupling and magnetic saturation effect under voltage and current constraint. It introduces geometric positions of torque and voltage increment in dq axis framework to determine the differentials between target values and results of the previous iteration, and then converts the torque and current differentials into current...
Hematite has emerged as a good photocatalyst for efficient solar water splitting due to its favorable optical band gap (2.1–2.2 eV), extraordinary chemical stability in oxidative environment, abundance, and low cost. According to theoretical prediction, the solar-to-hydrogen efficiency of hematite can be 16.8% and the water splitting photocurrent can be 12.6 mA cm−2. However, the practical performance...
We present the design for arrays of dual-polarization sensitive, superconducting sensors for far infrared astrophysics. Each pixel is feedhorn-coupled and consists of orthogonal, lumped-element kinetic inductance detectors (LEKIDs) both fabricated in the same deposition layer. Each LEKID pair contains an absorptive “one-turn” inductor and a large interdigitated capacitor (IDC) made of stoichiometric...
We describe a scalable optomechanical array, with double-disk resonators, for two-qubit quantum phase gate of phonon states where mechanical systems exhibit significantly long lifetime. Simulation results show high fidelity and low photon loss.
We demonstrate a strong optomechanical coupling air-slot mode-gap photonic crystal cavity with dispersive coupling gom up to 940 GHz/nm. Optical and mechanical measurements are shown. Radio frequency spectrum is obtained theoretically and experimentally with a megahertz resonant frequency.
We demonstrated a strong optomechanical coupling in a high-quality factor (Q) air-slot mode-gap photonic crystal cavity with ultrasmall mode volume, with a coupling length L∼2.9µm. Optomechanical coupling lengths with different slot gaps and lengths were also compared.
We present experimental analysis of weak coupling for monolayer lead sulfide quantum dots coupled to silicon photonic crystal cavities between 4 K and room temperature, as well as power-saturation measurements of dots at 4 K.
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