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

Atomic Nuclei: Nuclear Relaxation Processes01:23

Atomic Nuclei: Nuclear Relaxation Processes

632
In the absence of an external magnetic field, nuclear spin states are degenerate and randomly oriented. When a magnetic field is applied, the spins begin to precess and orient themselves along (lower energy) or against (higher energy) the direction of the field. At equilibrium, a slight excess population of spins exists in the lower energy state. Because the direction of the magnetic field is fixed as the z-axis,  the precessing magnetic moments are randomly oriented around the z-axis.
632
Atomic Nuclei: Nuclear Spin State Overview01:03

Atomic Nuclei: Nuclear Spin State Overview

891
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...
891
Mass Analyzers: Common Types01:19

Mass Analyzers: Common Types

579
The quadrupole mass analyzer consists of four cylindrical metal rods arranged in a diamond carrying a DC voltage and a radio-frequency AC voltage. The motion of ions through the quadrupole depends on the field strength, causing only ions of a certain m/z to resonate successfully and strike the detector at a given field strength. Though the transmission rate for these analyzers is high, the exact elemental composition of the sample is not determined because of low resolution; however, they are...
579
The Quantum-Mechanical Model of an Atom02:45

The Quantum-Mechanical Model of an Atom

42.0K
Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing hydrogen spectra.
42.0K
Atomic Nuclei: Types of Nuclear Relaxation01:28

Atomic Nuclei: Types of Nuclear Relaxation

268
Nuclear relaxation restores the equilibrium population imbalance and can occur via spin–lattice or spin–spin mechanisms, which are first-order exponential decay processes.
In spin–lattice or longitudinal relaxation, the excited spins exchange energy with the surrounding lattice as they return to the lower energy level. Among several mechanisms that contribute to spin–lattice relaxation, magnetic dipolar interactions are significant. Here, the excited nucleus transfers...
268
Atomic Nuclei: Nuclear Spin State Population Distribution01:14

Atomic Nuclei: Nuclear Spin State Population Distribution

956
Near absolute zero temperatures, in the presence of a magnetic field, the majority of nuclei prefer the lower energy spin-up state to the higher energy spin-down state. As temperatures increase, the energy from thermal collisions distributes the spins more equally between the two states. The Boltzmann distribution equation gives the ratio of the number of spins predicted in the spin −½ (N−) and spin +½ (N+) states.
956

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Vibrational Properties of Hydroperoxyl Radical-Water Clusters Using Quantum Algorithms for Wavepacket Dynamics.

The journal of physical chemistry. A·2026
Same author

Ion-Based Characterization of Laser Beam Profiles for Quantum Information Processing.

Entropy (Basel, Switzerland)·2025
Same author

Adaptive AI-enhanced computation offloading with machine learning for QoE optimization and energy-efficient mobile edge systems.

Scientific reports·2025
Same author

Quantum Circuit and Mapping Algorithms for Wavepacket Dynamics: Case Study of Anharmonic Hydrogen Bonds in Protonated and Hydroxide Water Clusters.

Journal of chemical theory and computation·2025
Same author

Resource Optimization for Quantum Dynamics with Tensor Networks: Quantum and Classical Algorithms.

The journal of physical chemistry. A·2024
Same author

Rare Events Sampling Methods for Quantum and Classical Ab Initio Molecular Dynamics.

The journal of physical chemistry. A·2024

Video Experimental Relacionado

Updated: Jun 10, 2025

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

14.4K

Dinámica nuclear cuántica en un conjunto distribuido de sistemas de computación cuántica de trampa iónica

Anurag Dwivedi1,2, A J Rasmusson2,3, Philip Richerme2,3

  • 1Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States.

Journal of the American Chemical Society
|October 16, 2024
PubMed
Resumen

Este estudio demuestra la dinámica nuclear cuántica en una computadora cuántica de iones atrapados, logrando una precisión química para los espectros vibratorios moleculares. Sus pioneros distribuyeron computación cuántica para simulaciones complejas de dinámica química.

Más Videos Relacionados

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
11:33

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

Published on: January 19, 2018

9.5K
Gradient Echo Quantum Memory in Warm Atomic Vapor
10:00

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

12.8K

Videos de Experimentos Relacionados

Last Updated: Jun 10, 2025

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

14.4K
All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
11:33

All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

Published on: January 19, 2018

9.5K
Gradient Echo Quantum Memory in Warm Atomic Vapor
10:00

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

12.8K

Área de la Ciencia:

  • La computación cuántica
  • Dinámica Química
  • Espectroscopia molecular

Sus antecedentes:

  • La dinámica nuclear cuántica es computacionalmente desafiante para los sistemas clásicos.
  • El procesamiento de información cuántica ofrece una solución potencial para estos problemas intratables.
  • Los sistemas enlazados por hidrógeno exhiben dinámicas complejas de protones cruciales para las reacciones químicas.

Objetivo del estudio:

  • Para emular experimentalmente la dinámica de paquetes de ondas nucleares cuánticas utilizando una computadora cuántica de iones atrapados.
  • Para investigar la dinámica de protones compartidos en sistemas de enlaces de hidrógeno de corta fuerza.
  • Para demostrar la primera aplicación de la computación cuántica distribuida para la dinámica química.

Principales métodos:

  • Utilizó la computadora cuántica de iones atrapados de 11 qubits de IonQ, Harmony.
  • Emuló la evolución de paquetes de ondas nucleares cuánticas a lo largo de las superficies de energía potencial.
  • Empleó un formalismo de red tensorial para la computación cuántica distribuida.
  • Proyecciones espaciales dependientes del tiempo y frecuencias vibratorias extraídas.

Principales resultados:

  • Se logró un buen acuerdo entre los resultados cuánticos experimentales y las simulaciones clásicas para la dinámica de paquetes de ondas.
  • Energías propias de vibración obtenidas con exactitud química (dentro de 0,1 kcal/mol de las simulaciones clásicas).
  • Demostró con éxito la computación cuántica paralela a través de un conjunto distribuido de computadoras cuánticas de trampa de iones.

Conclusiones:

  • El enfoque desarrollado ofrece un nuevo paradigma para el estudio de la dinámica química cuántica molecular y los espectros vibratorios.
  • Este trabajo valida el uso de computadoras cuánticas para simular fenómenos químicos complejos.
  • Presenta la primera aplicación exitosa de la computación cuántica distribuida en el campo de la dinámica química.