Wafer-Scale MgB Superconducting Devices.

Progress in superconducting device and detector technologies over the past decade has realized practical applications in quantum computers, detectors for far-infrared telescopes, and optical communications. Superconducting thin-film materials, however, have remained largely unchanged, with aluminum still being the material of choice for superconducting qubits and niobium compounds for high-frequency/high kinetic inductance devices. Magnesium diboride (MgB), known for its highest transition temperature ( = 39 K) among metallic superconductors, is a viable material for elevated temperature and higher frequency superconducting devices moving toward THz frequencies.

Single-photon detection using large-scale high-temperature MgB sensors at 20 K.

Ultra-fast single-photon detectors with high current density and operating temperature can benefit space and ground applications, including quantum optical communication systems, lightweight cryogenics for space crafts, and medical use. Here we demonstrate magnesium diboride (MgB) thin-film superconducting microwires capable of single-photon detection at 1.55  μm optical wavelength.

Truncated Nonlinear Interferometry for Quantum-Enhanced Atomic Force Microscopy.

Nonlinear interferometers that replace beam splitters in Mach-Zehnder interferometers with nonlinear amplifiers for quantum-enhanced phase measurements have drawn increasing interest in recent years, but practical quantum sensors based on nonlinear interferometry remain an outstanding challenge. Here, we demonstrate the first practical application of nonlinear interferometry by measuring the displacement of an atomic force microscope microcantilever with quantum noise reduction of up to 3 dB below the standard quantum limit, corresponding to a quantum-enhanced measurement of beam displacement of 1.7  fm/sqrt[Hz].

Resin: Volatile Components and Impact on Plant Pathogenic and Foodborne Bacteria.

() produces a white, sticky, latex-like resin with antimicrobial properties. The aims of this research were to evaluate the effects of this resin ( resin) on bacterial populations and to determine the impact of its primary volatile components on bioactivity. The impact of sample treatment on chemical composition of resin was analyzed using Fourier transform infrared spectroscopy (FTIR) coupled with principal component analysis.

Clinical outcomes of three different crown systems with CAD/CAM technology.

Statement Of Problem: Computer-aided design and computer-aided manufacturing (CAD/CAM) generated restorations are gaining popularity. However, limited clinical evidence is available for single-unit posterior CAD/CAM restorations fabricated with established and newer crown materials.

Purpose: The purpose of this clinical study was to assess the restoration quality of and gingival response to CAD/CAM fabricated posterior single-tooth restorations with different processing technologies.