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La computación cuántica universal con la interacción de intercambio.

D P DiVincenzo1, D Bacon, J Kempe

  • 1IBM Research Division, T. J. Watson Research Center, Yorktown Heights, New York 10598, USA. divince@watson.ibm.com

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|December 1, 2000
PubMed
Resumen
Este resumen es generado por máquina.

Los investigadores proponen un nuevo esquema de computación cuántica utilizando sólo la interacción de Heisenberg. Esto simplifica las computadoras cuánticas de estado sólido al eliminar operaciones complejas de un qubit, acelerando potencialmente su desarrollo.

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Área de la Ciencia:

  • La computación cuántica es la computación cuántica.
  • Física del estado sólido Física del estado sólido
  • Ciencias de la información cuántica Ciencias de la información cuántica.

Sus antecedentes:

  • Las actuales implementaciones de computadoras cuánticas de estado sólido se enfrentan a desafíos significativos.
  • Estos desafíos incluyen operaciones complejas de un qubit que requieren campos magnéticos locales, que son lentos y aumentan la decoherencia.
  • Las arquitecturas existentes a menudo se basan en una combinación de interacciones de Heisenberg y controles de campo magnético local.

Objetivo del estudio:

  • Para introducir un nuevo esquema de computación cuántica.
  • Para demostrar que la interacción de Heisenberg por sí sola es suficiente para implementar cualquier circuito cuántico.
  • Para simplificar la computación cuántica de estado sólido eliminando la necesidad de operaciones de un qubit.

Principales métodos:

  • Desarrollo de un esquema teórico explícito.
  • Utilizando sólo la interacción de intercambio sintonizable (interacción de Heisenberg) entre giros.
  • Eliminación del requisito de control de campo magnético local para las puertas de un qubit.

Principales resultados:

  • Se presenta un método donde la interacción de Heisenberg controla exclusivamente los cálculos cuánticos.
  • Este esquema requiere aproximadamente tres veces más qubits y diez veces más operaciones de dos qubits.
  • La complejidad asociada con las operaciones de un qubit se elimina por completo.

Conclusiones:

  • El esquema propuesto reduce significativamente la complejidad del hardware en las computadoras cuánticas de estado sólido.
  • Se espera que la eliminación de las operaciones de un qubit mitigue los problemas de decoherencia.
  • Este enfoque debería acelerar la realización de dispositivos prácticos de computación cuántica de estado sólido.