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Ligand-gated ion channels are transmembrane proteins with a channel for ions to pass through and a binding site for a ligand. The channel opens only when a ligand attaches to the binding site.
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Voltage-gated ion channels are transmembrane proteins that open and close in response to changes in the membrane potential. They are present on the membranes of all electrically excitable cells such as neurons, heart, and muscle cells.
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Mechanically-gated Ion Channels01:12

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Mechanically-gated ion channels are proteins found in eukaryotic and prokaryotic cell membranes that open in response to mechanical stress. Tension, compression, swelling, and shear stress can alter the conformation of the protein, opening a transmembrane channel that allows the passage of ions for signal transmission. In eukaryotes, mechanically-gated channels are distributed in several regions like the neurons, lungs, skin, bladder, and heart, where they play critical roles in numerous...
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Teletransportación de puertas cuánticas entre qubits separados en un procesador de iones atrapados

Yong Wan1,2, Daniel Kienzler3,2, Stephen D Erickson3,2

  • 1National Institute of Standards and Technology, Boulder, CO 80305, USA. yong.wan@nist.gov.

Science (New York, N.Y.)
|June 1, 2019
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Resumen
Este resumen es generado por máquina.

La teletransportación de puerta cuántica (QGT) permite operaciones de qubit remotas esenciales para escalar las computadoras cuánticas. Este estudio demuestra QGT para una puerta NO controlada en una trampa de iones, logrando alta fidelidad.

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Área de la Ciencia:

  • La computación cuántica
  • Ciencia de la información cuántica
  • Física atómica

Sus antecedentes:

  • Las computadoras cuánticas a gran escala requieren operaciones de puerta cuántica entre qubits distantes.
  • La teletransportación de puertas cuánticas (QGT) ofrece una solución utilizando operaciones locales, comunicación clásica y entrelazamiento.

Objetivo del estudio:

  • Para demostrar la teletransportación de puertas cuánticas (QGT) en una arquitectura de trampa de iones escalable.
  • Para teletransportar una puerta NOT controlada (CNOT) entre qubits separados espacialmente.

Principales métodos:

  • Utilizó el transporte de iones para el movimiento de qubits dentro de la trampa.
  • Puertas de un solo y dos qubits dirigidas individualmente (de la misma especie y de especies mixtas).
  • Se emplean operaciones condicionales en tiempo real y detecciones de un solo qubit.

Principales resultados:

  • Se ha demostrado con éxito la QGT determinista de una puerta CNOT entre qubits separados.
  • Logró una fidelidad de entrelazamiento para la puerta CNOT teletransportada en el rango (0.845, 0.872) con un 95% de confianza.
  • Herramientas esenciales integradas para escalar las computadoras cuánticas de iones atrapados.

Conclusiones:

  • El QGT demostrado es un paso crucial hacia la construcción de computadoras cuánticas de iones atrapados escalables.
  • Este trabajo valida la combinación de técnicas avanzadas para futuros procesadores cuánticos.