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Bloch transistor: Bloqueo de fase de microondas

Ilya Antonov1, Rais S Shaikhaidarov2,3, Kyung Ho Kim1,4

  • 1Physics, Royal Holloway University of London, Egham, Surrey, UK.

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Resumen

Un nuevo dispositivo cuántico, el transistor de Bloch (BT), utiliza el deslizamiento de fase cuántico coherente para entregar corriente cuantificada. Esta tecnología es escalable y compatible con otros dispositivos cuánticos superconductores.

Palabras clave:
transistor de Blochdeslizamiento de fase cuántico coherentecuantificación de corrienteplataformas criogénicasdispositivos cuánticos superconductores

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Área de la Ciencia:

  • Física cuántica
  • Física de la materia condensada
  • Superconductividad

Sus antecedentes:

  • El deslizamiento de fase cuántico coherente y la cuantificación de la corriente son fenómenos fundamentales en los superconductores.
  • Estos fenómenos son duales a la tunelización de pares de Cooper y la cuantificación de voltaje (pasos de Shapiro).
  • Experimentos recientes han demostrado estos fenómenos, allanando el camino para nuevos dispositivos cuánticos.

Objetivo del estudio:

  • Presentar y estudiar el transistor de Bloch (BT), un novedoso dispositivo cuántico.
  • Analizar los principios operativos y los parámetros del BT.
  • Explorar el potencial de la tecnología BT en plataformas cuánticas criogénicas.

Principales métodos:

  • El estudio se centra en dos uniones Josephson (JJ) acopladas que operan en el régimen de deslizamiento de fase cuántico coherente.
  • Un nuevo mecanismo para el bloqueo de fase de las oscilaciones de Bloch en JJs con microondas a través de carga inducida es central para la operación del BT.
  • Se investiga el efecto Aharonov-Casher para el control de la tensión de puerta de la cuantificación de la corriente.

Principales resultados:

  • El transistor de Bloch (BT) puede entregar corriente cuantificada y no disipativa a circuitos cuánticos.
  • El bloqueo de fase de carga permite la cuantificación de la corriente y el control de la tensión de puerta.
  • El estudio analiza los parámetros y las características operativas del BT.

Conclusiones:

  • El transistor de Bloch (BT) representa un avance significativo en la tecnología de dispositivos cuánticos.
  • La tecnología BT es escalable y compatible con los dispositivos cuánticos superconductores existentes.
  • El BT es un componente clave de una plataforma emergente de tecnología cuántica criogénica.