John Biesecker
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View article: Picosecond Josephson Samplers: Modeling and Measurements
Picosecond Josephson Samplers: Modeling and Measurements Open
Measurement of signals generated by superconducting Josephson junction (JJ) circuits require ultra-fast components located in close proximity to the generating circuitry. We report a detailed study of optimal design criteria for a JJ-based…
View article: AC metrology applications of the Josephson effect
AC metrology applications of the Josephson effect Open
The performance of programmable voltage signals that exploit the quantum behavior of superconducting Josephson junctions continues to improve and enhance measurements in metrology, communications, and quantum control. We review advances in…
View article: Indium Bump Bonding: Advanced Integration Techniques for Low-Temperature Detectors and Readout
Indium Bump Bonding: Advanced Integration Techniques for Low-Temperature Detectors and Readout Open
We have examined the influence of bump shape and bonding pressure on low-temperature electrical properties of indium bump connections including superconducting transition temperature, normal state resistance, and superconducting critical c…
View article: Nb/<i>a</i>-Si/Nb-Junction Josephson Arbitrary Waveform Synthesizers for Quantum Information
Nb/<i>a</i>-Si/Nb-Junction Josephson Arbitrary Waveform Synthesizers for Quantum Information Open
We demonstrate Josephson arbitrary waveform synthesizers (JAWS) with increased operating temperature range for temperatures below 4 K. These JAWS synthesizers were fabricated with externally-shunted Nb/a-Si/Nb junctions whose critical curr…
View article: Single Flux Quantum-Based Digital Control of Superconducting Qubits in a Multi-Chip Module
Single Flux Quantum-Based Digital Control of Superconducting Qubits in a Multi-Chip Module Open
The single flux quantum (SFQ) digital superconducting logic family has been proposed for the scalable control of next-generation superconducting qubit arrays. In the initial implementation, SFQ-based gate fidelity was limited by quasiparti…
View article: Demonstration of Superconducting Optoelectronic Single-Photon Synapses
Demonstration of Superconducting Optoelectronic Single-Photon Synapses Open
Superconducting optoelectronic hardware is being explored as a path towards artificial spiking neural networks with unprecedented scales of complexity and computational ability. Such hardware combines integrated-photonic components for few…
View article: Digital Control of a Superconducting Qubit Using a Josephson Pulse Generator at 3 K
Digital Control of a Superconducting Qubit Using a Josephson Pulse Generator at 3 K Open
Scaling of quantum computers to fault-tolerant levels relies critically on the integration of energy-efficient, stable, and reproducible qubit control and readout electronics. In comparison to traditional semiconductor-control electronics …