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Coherencia cuántica a temperatura ambiente y oscilaciones de Rabi en vanadilftalocianina: hacia cúbitos de espín

Matteo Atzori¹, Lorenzo Tesi¹, Elena Morra²

¹Dipartimento di Chimica "Ugo Schiff" & INSTM RU, Università degli Studi di Firenze , Via della Lastruccia 3, I50019 Sesto Fiorentino (Firenze), Italy.

Journal of the American Chemical Society

|February 9, 2016

Resumen

La vanadilftalocianina (VOPc) demuestra una notable coherencia cuántica hasta la temperatura ambiente, una propiedad clave para los qubits de espín molecular. Esta investigación pone de relieve el VOPc

Área de la Ciencia:

Espintrónica molecular
Materiales para la computación cuántica
Ingeniería molecular avanzada

Sus antecedentes:

Los qubits de espín molecular ofrecen potencial para tecnologías cuánticas escalables.
La vanadilftalocianina (VOPc) es un candidato prometedor debido a su multifuncionalidad y procesamiento.
Comprender la relajación magnética y la coherencia cuántica es crucial para el desarrollo de los qubits.

Objetivo del estudio:

Investigar la relajación magnética y las propiedades de coherencia cuántica de VOPc.
Explorar la influencia del entorno cristalino en estas propiedades.
Para evaluar la idoneidad de VOPc como un qubit de espín molecular.

Principales métodos:

Enfoque multitecnico que combina la susceptometría de CA y la espectroscopia de resonancia paramagnética de electrones (EPR).
Espectroscopia EPR pulsada para sondear la coherencia cuántica.
Investigación del VOPc en forma pura y en dispersiones con TiOPc.

Principales resultados:

La relajación magnética muestra una dependencia directa del mecanismo de la temperatura hasta 20 K.
La coherencia cuántica se observó hasta la temperatura ambiente (300 K) con T (m) ~ 1 microsegundo.
Las oscilaciones de Rabi confirmaron una coherencia cuántica robusta en entornos nucleares de espín activo a temperatura ambiente.

Conclusiones:

VOPc exhibe una robustez de coherencia cuántica excepcional a temperatura ambiente.
Esto hace que VOPc sea un semiconductor molecular muy prometedor para dispositivos espintrónicos y aplicaciones cuánticas.
Los hallazgos representan un avance significativo para los qubits de espín electrónico molecular.

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