Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Spin–Spin Coupling Constant: Overview01:08

Spin–Spin Coupling Constant: Overview

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 have a...
Spin–Spin Coupling: One-Bond Coupling01:17

Spin–Spin Coupling: One-Bond Coupling

Coupling interactions are strongest between NMR-active nuclei bonded to each other, where spin information can be transmitted directly through the pair of bonding electrons. While nuclei polarize their electrons to the opposite spins, the bonding electron pair has opposite spins. Configurations with antiparallel nuclear spins are expected to be lower in energy. When coupling makes antiparallel states more favorable, J is considered to have a positive value. The one-bond coupling constant, 1J,...
Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)01:20

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

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...
Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)01:22

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

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...
Superconductor01:24

Superconductor

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...
Types Of Superconductors01:28

Types Of Superconductors

A superconductor is a substance that offers zero resistance to the electric current when it drops below a critical temperature. Zero resistance is not the only interesting phenomenon as materials reach their transition temperatures. A second effect is the exclusion of magnetic fields. This is known as the Meissner effect. A light, permanent magnet placed over a superconducting sample will levitate in a stable position above the superconductor. High-speed trains that levitate on strong...

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Localized quasiparticles in a fluxonium with quasi-two-dimensional amorphous kinetic inductors.

Nature communications·2026
Same author

Randomized Benchmarking with Non-Markovian Noise and Realistic Finite-Time Gates.

Physical review letters·2025
Same author

Benchmarking the Readout of a Superconducting Qubit for Repeated Measurements.

Physical review letters·2025
Same author

A millimeter-wave photometric camera for long-range imaging through optical obscurants using kinetic inductance detectors.

The Review of scientific instruments·2025
Same author

Erratum: "The Simons Observatory: Cryogenic half wave plate rotation mechanism for the small aperture telescopes" [Rev. Sci. Instrum. 95, 024504 (2024)].

The Review of scientific instruments·2025
Same author

The Simons Observatory: Cryogenic half wave plate rotation mechanism for the small aperture telescopes.

The Review of scientific instruments·2024

Video Experimental Relacionado

Updated: May 12, 2026

Fabrication of Uniform Nanoscale Cavities via Silicon Direct Wafer Bonding
10:32

Fabrication of Uniform Nanoscale Cavities via Silicon Direct Wafer Bonding

Published on: January 9, 2014

Acoplamiento de qubits superconductores a través de un bus de cavidad.

J Majer1, J M Chow, J M Gambetta

  • 1Department of Applied Physics, Yale University, New Haven, Connecticut 06520, USA. johannes.majer@yale.edu

Nature
|September 28, 2007
PubMed
Resumen
Este resumen es generado por máquina.

Los investigadores desarrollaron un bus cuántico utilizando fotones de microondas para vincular qubits superconductores distantes. Esto permite una transferencia coherente del estado cuántico, un paso clave para las arquitecturas de computación cuántica escalables.

Más Videos Relacionados

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

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

Videos de Experimentos Relacionados

Last Updated: May 12, 2026

Fabrication of Uniform Nanoscale Cavities via Silicon Direct Wafer Bonding
10:32

Fabrication of Uniform Nanoscale Cavities via Silicon Direct Wafer Bonding

Published on: January 9, 2014

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

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

Área de la Ciencia:

  • La computación cuántica es la computación cuántica.
  • Circuitos superconductores en circuitos superconductores.
  • Procesamiento de información cuántica Procesamiento de información cuántica.

Sus antecedentes:

  • Los circuitos superconductores son los principales candidatos para los bits cuánticos (qubits) en las computadoras cuánticas.
  • Si bien las operaciones de un solo qubit son rutinarias, acoplar qubits distantes para operaciones de puerta arbitrarias sigue siendo un desafío.
  • Los métodos existentes se basan principalmente en interacciones locales, lo que limita la escalabilidad.

Objetivo del estudio:

  • Para demostrar un método escalable para acoplar qubits superconductores distantes.
  • Para implementar una arquitectura de bus cuántico para la distribución de información cuántica.
  • Para permitir la transferencia coherente de estados cuánticos entre qubits no adyacentes en un chip.

Principales métodos:

  • Utilizó una cavidad de línea de transmisión para confinar fotones de microondas, actuando como un bus cuántico.
  • Acoplado dos qubits superconductores ubicados en lados opuestos de un chip a través de este bus cuántico.
  • Empleó un control de qubit rápido para cambiar dinámicamente el acoplamiento de qubits y la interacción mediada a través de fotones virtuales.

Principales resultados:

  • Se demostró con éxito la transferencia coherente de estados cuánticos entre dos qubits superconductores distantes.
  • El bus cuántico medió la interacción utilizando fotones virtuales, mitigando la pérdida inducida por la cavidad.
  • La cavidad facilitó el control multiplexado y la medición de los estados de los qubits.

Conclusiones:

  • La arquitectura de bus cuántico implementada empareja efectivamente los qubits superconductores distantes.
  • Este enfoque permite una transferencia de estado cuántico coherente y es escalable a más de dos qubits.
  • Presenta una arquitectura atractiva para el procesamiento de información cuántica en el chip.