2013 Hispanic Heritage Month Youth Art Contest Results
Abstract not provided.
Publications
Resistive Switching in Aluminum Nitride
Abstract not provided.
Fundamental Study of Metal/Oxide/Metal Memristor Physics and Device Optimization
Abstract not provided.
Neuromorphic Computing with Memristors
Abstract not provided.
Cryogenic CMOS circuits for single charge digital readout
Abstract not provided.
Cryogenic CMOS circuits for single charge digital readout
The readout of a solid state qubit often relies on single charge sensitive electrometry. However the combination of fast and accurate measurements is non trivial due to large RC time constants due to the electrometers resistance and shunt capacitance from wires between the cold stage and room temperature. Currently fast sensitive measurements are accomplished through rf reflectrometry. I will present an alternative single charge readout technique based on cryogenic CMOS circuits in hopes to improve speed, signal-to-noise, power consumption and simplicity in implementation. The readout circuit is based on a current comparator where changes in current from an electrometer will trigger a digital output. These circuits were fabricated using Sandia's 0.35 {micro}m CMOS foundry process. Initial measurements of comparators with an addition a current amplifier have displayed current sensitivities of < 1nA at 4.2K, switching speeds up to {approx}120ns, while consuming {approx}10 {micro}W. I will also discuss an investigation of noise characterization of our CMOS process in hopes to obtain a better understanding of the ultimate limit in signal to noise performance.
Steps toward on chip integration of single electron devices with CMOS electronics
Abstract not provided.
7 Results