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

Generation of Three-Phase Voltage01:21

Generation of Three-Phase Voltage

565
A three-phase AC generator has a rotor with a rotating magnet placed within the stator mounted with the stationary three-phase winding to generate three-phase voltages via mutual induction. These windings are evenly distributed around the inner circumference of the stator and are arranged 120 electrical degrees apart. Three-phase stator windings consist of three separate coils or groups of coils, known as phases, each connected in Y (star) configuration or Delta configuration.
As the rotor...
565
Atomic Nuclei: Nuclear Spin State Overview01:03

Atomic Nuclei: Nuclear Spin State Overview

1.5K
NMR-active nuclei have energy levels called 'spin states' that are associated with the orientations of their nuclear magnetic moments. In the absence of a magnetic field, the nuclear magnetic moments are randomly oriented, and the spin states are degenerate. When an external magnetic field is applied, the spin states have only 2 + 1 orientations available to them. A proton with = ½ has two available orientations. Similarly, for a quadrupolar nucleus with a nuclear spin value of one, the...
1.5K
Three-Phase Voltages01:30

Three-Phase Voltages

396
A three-phase generator produces three voltages that are equal in magnitude but have a phase difference of 120 degrees. This identical magnitude and equal phase separated voltages are known as the balanced voltages and help to minimize power loss while ensuring a steady delivery of energy to connected loads. As voltage sources in a three-phase system can be configured in a wye or a delta formation, the loads connected to these systems can also be arranged in either configuration. This...
396
Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)01:22

Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)

1.3K
Vicinal or three-bond coupling is commonly observed between protons attached to adjacent carbons. Here, nuclear spin information is primarily transferred via electron spin interactions between adjacent C‑H bond orbitals. This generally favors the antiparallel arrangement of spins, so 3J values are usually positive.
The extent of coupling depends on the C‑C bond length, the two H‑C‑C angles, any electron-withdrawing substituents, and the dihedral angle between the involved orbitals. The...
1.3K
Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)01:20

Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)

1.3K
Two NMR-active nuclei bonded to a central atom can be involved in geminal or two-bond coupling. Geminal coupling is commonly seen between diastereotopic protons in chiral molecules and unsymmetrical alkenes, among others.
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
1.3K
Superconductor01:24

Superconductor

1.5K
A substance that reaches superconductivity, a state in which magnetic fields cannot penetrate, and there is no electrical resistance, is referred to as a superconductor. In 1911, Heike Kamerlingh Onnes of Leiden University, a Dutch physicist, observed a relation between the temperature and the resistance of the element mercury. The mercury sample was then cooled in liquid helium to study the linear dependence of resistance on temperature. It was observed that, as the temperature decreased, the...
1.5K

You might also read

Related Articles

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

Sort by
Same author

Observation of disorder-free localization using a (2+1)D lattice gauge theory on a quantum processor.

Science (New York, N.Y.)·2026
Same author

Assessment of microplastic retention efficiency using pilot-scale filtration systems applied to drinking water.

Journal of hazardous materials·2025
Same author

Visualizing dynamics of charges and strings in (2 + 1)D lattice gauge theories.

Nature·2025
Same author

Scaling and logic in the colour code on a superconducting quantum processor.

Nature·2025
Same author

Thermalization and criticality on an analogue-digital quantum simulator.

Nature·2025
Same author

Phase transitions in random circuit sampling.

Nature·2024

Related Experiment Video

Updated: Nov 15, 2025

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
07:56

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

8.8K

Generation of three-qubit entangled states using superconducting phase qubits.

Matthew Neeley1, Radoslaw C Bialczak, M Lenander

  • 1Department of Physics, University of California, Santa Barbara, California 93106, USA.

Nature
|October 1, 2010
PubMed
Summary

Researchers demonstrate creating and measuring three-qubit entangled states, GHZ and W, using superconducting qubits. This advances quantum computation by experimentally realizing complex quantum entanglement beyond two qubits.

More Related Videos

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

9.4K
Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

14.8K

Related Experiment Videos

Last Updated: Nov 15, 2025

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
07:56

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

8.8K
Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

9.4K
Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
09:23

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

Published on: May 30, 2014

14.8K

Area of Science:

  • Quantum Information Science
  • Superconducting Quantum Computing

Background:

  • Entanglement is a critical resource for quantum computation.
  • Superconducting devices have demonstrated two-qubit entanglement for algorithms and Bell's inequality tests.
  • Three qubits exhibit two distinct entanglement types, unlike the single type for two qubits.

Purpose of the Study:

  • To experimentally create and measure three-qubit entangled states (GHZ and W) using superconducting qubits.
  • To characterize these states and confirm genuine three-qubit entanglement.

Main Methods:

  • Utilized three coupled superconducting phase qubits.
  • Employed quantum state tomography for full state characterization.
  • Verified entanglement using entanglement witnesses.

Main Results:

  • Successfully created and measured both GHZ and W three-qubit entangled states.
  • Quantum state tomography confirmed the fidelity of the generated states.
  • Entanglement witnesses demonstrated that the states are not separable into two-qubit entangled mixtures.

Conclusions:

  • This work provides experimental evidence for the creation of distinct three-qubit entangled states.
  • The results are significant for advancing physical implementations of quantum computers.
  • Confirms the utility of superconducting qubits for complex quantum information processing.