Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Biasing of P-N Junction01:16

Biasing of P-N Junction

1.7K
The operation of a p-n junction diode involves various biasing conditions, including forward bias, reverse bias, and equilibrium.
In equilibrium, no external voltage is applied across the p-n junction. The depletion region is formed at the junction interface due to the diffusion of carriers, which leaves behind charged dopants, acceptors on the p-side, and donors on the n-side. These immobile charges create an electric field that prevents further diffusion of carriers. The related energy band...
1.7K
Spin–Spin Coupling Constant: Overview01:08

Spin–Spin Coupling Constant: Overview

1.4K
In bromoethane, the three methyl protons are coupled to the two methylene protons that are three bonds away. In accordance with the n+1 rule, the signal from the methyl protons is split into three peaks with 1:2:1 relative intensities. The methylene protons appear as a quartet, with the relative intensities of 1:3:3:1.
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must...
1.4K
Biasing of Metal-Semiconductor Junctions01:27

Biasing of Metal-Semiconductor Junctions

528
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...
528
P-N junction01:11

P-N junction

1.1K
A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
1.1K
Problem-Solving: Tuning of a Guitar String01:04

Problem-Solving: Tuning of a Guitar String

946
In the case of stringed instruments like the guitar, the elastic property that determines the speed of the sound produced is its linear mass density or the mass per unit length. This is simply called the linear density. If the string's linear density is constant along the string, then the linear density is simply the total mass divided by the total length.
The string's wave speed can be regulated by varying the linear density. Tension is the other property that determines the speed of...
946
Oscillations In An LC Circuit01:30

Oscillations In An LC Circuit

3.0K
An idealized LC circuit of zero resistance can oscillate without any source of emf by shifting the energy stored in the circuit between the electric and magnetic fields. In such an LC circuit, if the capacitor contains a charge q before the switch is closed, then all the energy of the circuit is initially stored in the electric field of the capacitor. This energy is given by
3.0K

You might also read

Related Articles

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

Sort by
Same author

Versatile High-Sensitivity EPR Using Superconducting Spiral Microresonators.

Small methods·2025
Same author

The Nitrogen-Vacancy-Nitrogen Color Center: A Ubiquitous Visible and Near-Infrared-II Quantum Emitter in Nitrogen-Doped Diamond.

ACS nano·2025
Same author

Integration of Through-Sapphire Substrate Machining with Superconducting Quantum Processors.

Advanced materials (Deerfield Beach, Fla.)·2025
Same author

NV-plasmonics: modifying optical emission of an NV<sup>-</sup> center via plasmonic metal nanoparticles.

Nanophotonics (Berlin, Germany)·2024
Same author

Plasmonically engineered nitrogen-vacancy spin readout.

Optics express·2024
Same author

Magnetic fields reveal signatures of triplet-pair multi-exciton photoluminescence in singlet fission.

Nature chemistry·2024
Same journal

Erratum: Bacterial Turbulence at Compressible Fluid Interfaces [Phys. Rev. Lett. 136, 138301 (2026)].

Physical review letters·2026
Same journal

Unveiling Light-Quark Yukawa Flavor Structure via Dihadron Fragmentation at Lepton Colliders.

Physical review letters·2026
Same journal

Adaptable Route to Fast Coherent State Transport via Bang-Bang-Bang Protocols.

Physical review letters·2026
Same journal

Topological Transition and Emergence of Elasticity of Dislocation in Skyrmion Lattice: Beyond Kittel's Magnetic-Polar Analogy.

Physical review letters·2026
Same journal

Pound-Drever-Hall Method for Superconducting-Qubit Readout.

Physical review letters·2026
Same journal

Coupling a ^{73}Ge Nuclear Spin to an Electrostatically Defined Quantum Dot in Silicon.

Physical review letters·2026
See all related articles

Related Experiment Video

Updated: Jan 10, 2026

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

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

Published on: August 2, 2019

10.2K

Josephson Junction Tuning Described by Depinning Physics.

Oscar W Kennedy1, Jared H Cole2, Connor D Shelly1

  • 1Oxford Quantum Circuits, Thames Valley Science Park, Shinfield, Reading, RG2 9LH, United Kingdom.

Physical Review Letters
|November 21, 2025
PubMed
Summary
This summary is machine-generated.

Manufacturing variations in Josephson junctions limit superconducting quantum computers. This study models junction tuning, revealing it alters barrier composition, not thickness, improving qubit determinacy.

More Related Videos

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

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

Published on: June 3, 2015

15.3K
Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
11:45

Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps

Published on: August 17, 2017

15.2K

Related Experiment Videos

Last Updated: Jan 10, 2026

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
05:39

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

Published on: August 2, 2019

10.2K
Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

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

Published on: June 3, 2015

15.3K
Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps
11:45

Experimental Methods for Trapping Ions Using Microfabricated Surface Ion Traps

Published on: August 17, 2017

15.2K

Area of Science:

  • Quantum Computing
  • Condensed Matter Physics
  • Materials Science

Background:

  • Superconducting quantum computers utilize superconducting qubits with energy levels defined by Josephson junctions.
  • Manufacturing inconsistencies in Josephson junctions hinder the scalability of quantum circuits.
  • Junction-by-junction tuning offers a potential solution to improve circuit determinacy, but its physical mechanism remains unclear.

Purpose of the Study:

  • To investigate the physical mechanisms behind Josephson junction tuning.
  • To develop a model for understanding and optimizing junction tuning techniques.
  • To determine how tuning affects the Josephson junction's tunnel barrier.

Main Methods:

  • Developed a theoretical model of Josephson junction tuning based on depinning theory.
  • Analyzed a phase diagram of tuning rates.
  • Extracted dependencies on temperature, time-varying voltages, and oscillation frequency.
  • Compared tuning effects on room-temperature current-voltage characteristics, electrical breakdown, and transmon qubit energy levels.

Main Results:

  • The study successfully modeled junction tuning rates.
  • Identified key dependencies of tuning on experimental parameters.
  • Experimental comparisons indicated that tuning does not alter tunnel barrier thickness.
  • Tuning was found to modify the composition of the tunnel barrier.

Conclusions:

  • The depinning theory model provides a framework for understanding Josephson junction tuning.
  • Junction tuning is a viable method for enhancing the determinacy of superconducting circuits.
  • Optimizing tuning techniques requires understanding its effect on barrier composition, not thickness.