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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...
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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
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Caminata cuántica en el espacio de posición con átomos únicos atrapados ópticamente.

Michal Karski1, Leonid Förster, Jai-Min Choi

  • 1Institut für Angewandte Physik der Universität Bonn Wegelerstrasse 8, 53115 Bonn, Germany. karski@uni-bonn.de

Science (New York, N.Y.)
|July 11, 2009
PubMed
Resumen

Los investigadores demuestran una caminata cuántica utilizando átomos neutros individuales en una red óptica. Esta simulación cuántica muestra propiedades únicas y aplicaciones potenciales en la ciencia de la información cuántica y la computación cuántica.

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Área de la Ciencia:

  • La física cuántica es la física cuántica.
  • La ciencia de la información cuántica es una ciencia cuántica.

Sus antecedentes:

  • Las caminatas cuánticas son análogos cuánticos de las caminatas aleatorias clásicas.
  • Exhiben propiedades distintas con aplicaciones potenciales en la ciencia de la información cuántica.

Objetivo del estudio:

  • Para implementar experimentalmente una caminata cuántica en una línea usando átomos neutros individuales.
  • Para caracterizar la coherencia espacial de la caminata cuántica y observar la transición cuántica a la clásica.

Principales métodos:

  • Utilizó átomos neutros individuales deslocalizados sobre sitios de una red óptica dependiente de espín 1D.
  • Empleó imágenes de fluorescencia con resolución en el sitio y tomografía de estado cuántico local para la caracterización de la función de onda.

Principales resultados:

  • Implementó con éxito una caminata cuántica en una línea con átomos neutros.
  • Demostró la coherencia espacial de la función de onda cuántica.
  • Observó la transición cuántica a clásica en el sistema.

Conclusiones:

  • El sistema experimental proporciona una plataforma para estudiar los paseos cuánticos y sus propiedades.
  • Este trabajo allana el camino para aplicaciones en el procesamiento de información cuántica, como los autómatas celulares cuánticos.