Video Experimental Relacionado
Updated: May 13, 2026
15:06
Measurement of Scattering Nonlinearities from a Single Plasmonic Nanoparticle
Published on: January 3, 2016
Aparición de una base de medición en la dispersión átomo-fotón
Yinnon Glickman1, Shlomi Kotler, Nitzan Akerman
1Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 76100, Israel.
Science (New York, N.Y.)
|March 9, 2013
Resumen
La base de la medición cuántica surge de la evolución del espín de iones atómicos y la detección de fotones. La polarización láser y la dirección de detección de fotones determinan esta base, aclarando las interacciones átomo-fotón.
Área de la Ciencia:
- La mecánica cuántica es la mecánica cuántica.
- Física atómica La física atómica es la física de los átomos.
- La óptica cuántica es una óptica cuántica.
Sus antecedentes:
- La teoría de la medición cuántica postula el colapso de la función de onda a una base de medición.
- Comprender el surgimiento de esta base en los sistemas físicos es crucial.
Objetivo del estudio:
- Para demostrar cómo surge una base de medición en el espín electrónico de un solo ion atómico atrapado.
- Investigar el papel de la dispersión y detección de fotones espontáneos en este proceso.
Principales métodos:
- Utilizó la tomografía cuántica de procesos para analizar la evolución del sistema.
- Examinó el estado combinado de espín-fotón a través de la reconstrucción tomográfica.
Principales resultados:
- La base de medición está determinada por la polarización del láser de excitación y la dirección de detección de fotones.
- La dispersión espontánea de fotones entrelaza superposiciones con polarización de fotones.
- Los estados de la base de medición permanecen clásicamente correlacionados con la polarización de fotones.
Conclusiones:
- Proporciona información sobre los mecanismos físicos que subyacen a la medición cuántica en las interacciones átomo-fotón.
- Destaca la interacción entre el espín atómico, las propiedades de los fotones y la formación de la base de medición.
Más Videos Relacionados
Videos de Conceptos Relacionados
02:45The Quantum-Mechanical Model of an Atom
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. Schrödinger...
01:23Atomic Spectroscopy: Absorption, Emission, and Fluorescence
Atomic spectroscopy is a vital tool in elemental analysis, both qualitatively and quantitatively. It can be broadly divided into optical spectroscopy, mass spectroscopy, and X-ray spectroscopy methods. The optical spectroscopic methods are atomic absorption spectroscopy (AAS), atomic emission spectroscopy (AES), and atomic fluorescence spectroscopy (AFS). The first step in all three methods is atomization, where the solid, liquid, or solution-phase samples are converted into gas-phase atoms and...
02:32The de Broglie Wavelength
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
04:08The Uncertainty Principle
Werner Heisenberg considered the limits of how accurately one can measure properties of an electron or other microscopic particles. He determined that there is a fundamental limit to how accurately one can measure both a particle’s position and its momentum simultaneously. The more accurate the measurement of the momentum of a particle is known, the less accurate the position at that time is known and vice versa. This is what is now called the Heisenberg uncertainty principle. He mathematically...
01:25Atomic Absorption Spectroscopy: Atomization Methods
Atomic Absorption Spectroscopy (AAS) atomizes samples through flame atomization or electrothermal atomization. Flame atomization typically involves a nebulizer and spray chamber assembly to combine the sample with a fuel–oxidant mixture, creating a fine aerosol mist that enters a burner. Typically, the fuel and oxidant are combined in an approximately stoichiometric ratio. However, for atoms that are easily oxidized, a fuel-rich mixture may be more advantageous. Only about 5% of the aerosol...
01:19Thomson's e/m Experiment
In a beam of charged particles created by a heated cathode, the particles move at different speeds. However, many applications need a beam with uniform particle speeds. An arrangement known as a velocity selector uses electric and magnetic fields to pick particles with a particular speed from the beam.
A particle with charge q, speed v, and mass m enters an area from the top, where the magnetic and electric fields are perpendicular both to the particle's motion and to one another. The magnetic...
A particle with charge q, speed v, and mass m enters an area from the top, where the magnetic and electric fields are perpendicular both to the particle's motion and to one another. The magnetic...