Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

A pulse is a short burst of radio waves distributed over a range of frequencies that simultaneously excites all the nuclei in the sample. Upon passing a radio frequency pulse along the x-axis, the nuclei absorb energy corresponding to their Larmor frequencies and achieve resonance. This shifts the net magnetization vector from the z-axis toward the transverse plane. This angle of rotation of the magnetization vector, or the flip angle, is proportional to the duration and intensity of the pulse.

Energy Associated With a Charge Distribution

Energy Associated With a Charge Distribution

The work done to bring a charge through a distance r is given by the potential difference between the initial and the final position. To assemble a collection of point charges, the total work done can be expressed in terms of the product of each pair of charges divided by their separation distance, defined with respect to a suitable origin. Solving this expression gives the energy stored in a point charge distribution.

Propagation Speed of Electromagnetic Waves

Propagation Speed of Electromagnetic Waves

Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:

Propagation of Action Potentials

Propagation of Action Potentials

The propagation of an action potential refers to the process by which a nerve impulse, or "action potential," travels along a neuron.
Neurons (nerve cells) have a resting membrane potential, with a slightly negative charge inside compared to outside. This is maintained by ion channels, such as sodium (Na+) and potassium (K+) channels, which control the flow of ions. When a stimulus, like a touch or a signal from another neuron, triggers the neuron, sodium channels open, allowing sodium ions to...

Continuous Charge Distributions

Continuous Charge Distributions

Imagine a bucket of water. It contains many molecules, of the order of 1026 molecules. Thus, although it contains discrete elements (molecules) at the microscopic level, macroscopically, it can be considered continuous. Small volume elements of water, infinitesimal compared to the bulk of the bucket's volume, still contain many molecules. Under this framework, quantized matter is approximated as continuous for practical purposes.
The electric charge can also be subjected to an analogical...

Biasing of Metal-Semiconductor Junctions

Biasing of Metal-Semiconductor Junctions

Biasing metal-semiconductor junctions involves applying a voltage across the junction. Specifically, the metal is connected to a voltage source, while the semiconductor is grounded. This technique is essential for controlling the direction and magnitude of current flow in electronic devices, including diodes, transistors, and photovoltaic cells.
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same authorSame journal

1 GHz Waveform Synthesis With Josephson Junction Arrays.

IEEE transactions on applied superconductivity : a publication of the IEEE Superconductivity Committee·2024

Same author

Jitter Sensitivity Analysis of the Superconducting Josephson Arbitrary Waveform Synthesizer.

IEEE transactions on microwave theory and techniques·2024

Same author

The NIST Johnson Noise Thermometry System for the Determination of the Boltzmann Constant.

Journal of research of the National Institute of Standards and Technology·2021

Same author

Dual Josephson Impedance Bridge: Towards a Universal Bridge for Impedance Metrology.

Metrologia·2021

Same author

Evaluation of a Josephson Arbitrary Waveform Synthesizer at Low Voltages for the Calibration of Lock-In Amplifiers.

IEEE transactions on instrumentation and measurement·2021

Same author

Characterization of Uniformity in Nb/Nb<sub>x</sub>Si<sub>1-x</sub>/Nb Josephson Junctions.

IEEE transactions on applied superconductivity : a publication of the IEEE Superconductivity Committee·2020

Search research articles

Related Experiment Video

Updated: Jan 6, 2026

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

Quantized Pulse Propagation in Josephson Junction Arrays.

Christine A Donnelly, Justus A Brevik, Nathan E Flowers-Jacobs

IEEE Transactions on Applied Superconductivity : a Publication of the IEEE Superconductivity Committee

|October 4, 2019

Summary

This summary is machine-generated.

We studied quantized voltage pulses from Josephson junction (JJ) arrays. Backward-propagating pulses broaden due to timing delays, while forward-propagating pulses remain stable, enabling scalable quantum voltage standards.

Keywords:

Digital-analog conversion Josephson junction arrays power measurement quantization signal synthesis superconducting devices superconducting integrated circuits

More Related Videos

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Related Experiment Videos

Last Updated: Jan 6, 2026

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

Published on: April 4, 2017

Area of Science:

Quantum electronics
Solid-state physics
Metrology

Background:

Josephson junction (JJ) arrays generate quantized voltage pulses.
Radio-frequency Josephson Arbitrary Waveform Synthesizer (RF-JAWS) circuits are crucial for quantum metrology.
Understanding pulse propagation in JJ arrays is key for device performance.

Purpose of the Study:

To investigate the impact of transmission delays on quantized voltage pulses in series-connected JJ arrays.
To compare time-domain measurements of backward-propagating and forward-propagating pulses.
To assess the scalability of RF-JAWS circuits for quantum-based reference sources.

Main Methods:

Time-domain electrical measurements of JJ arrays (1200 and 3600 JJs).
Simulations of quantized voltage pulse generation and propagation.
Utilizing two distinct output measurement configurations for RF-JAWS circuits.

Main Results:

Backward-propagating output pulses exhibit broadening due to timing delays within the JJ array.
Forward-propagating output pulses are largely insensitive to timing delays.
Simulations accurately predict the observed pulse behavior, confirming time-delayed superposition.

Conclusions:

Forward-propagating pulse configurations offer scalability for longer JJ arrays without significant broadening.
These findings are critical for advancing RF-JAWS circuits as quantum voltage standards.
The study validates theoretical expectations of pulse superposition in series JJ arrays.