Dilute Gd hydroxycarbonate particles for localized spin qubit integration

Tejedor, Inés (Universidad de Zaragoza) ; Urtizberea, Ainhoa (Universidad de Zaragoza) ; Natividad, Eva (Universidad de Zaragoza) ; Martínez, Jesús I. (Universidad de Zaragoza) ; Gascón, Ignacio (Universidad de Zaragoza) ; Roubeau, Olivier

Resumen: Molecular spins are considered as the quantum hardware to build hybrid quantum processors in which coupling to superconducting devices would provide the means to implement the necessary coherent manipulations. As an alternative to large magnetically-dilute crystals or concentrated nano-scale deposits of paramagnetic molecules that have been studied so far, the use of pre-formed sub-micronic spherical particles of a doped Gd@Y hydroxycarbonate is evaluated here. Particles with an adjustable number of spin carriers are prepared through the control of both particle size and doping. Bulk magnetic properties and continuous wave and time-domain-EPR spectroscopy show that the Gd spins in these particles are potential qubits with robust quantum coherence. Monolayers of densely-packed particles are then formed interfacially and transferred successfully to the surface of Nb superconducting resonators. Alternatively, these particles are disposed at controlled localizations as isolated groups of a few particles through Dip-Pen Nanolithography using colloidal organic dispersions as ink. Altogether, this study offers new material and methodologies relevant to the development of viable hybrid quantum processors.

Idioma: Inglés

DOI: 10.1039/D3MH01201H

Año: 2023

Publicado en: MATERIALS HORIZONS Advance Article, 11 (2023), 5214-5222
ISSN: 2051-6347

Financiación: info:eu-repo/grantAgreement/ES/DGA/E31-20R
Financiación: info:eu-repo/grantAgreement/ES/DGA/E31-23R
Financiación: info:eu-repo/grantAgreement/EC/H2020/862893/EU/Molecular spin qudits offering new hope for quantum computing/FATMOLS
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2019-105881RB-I00
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2020-1183294RB-I00

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Química Física (Dpto. Química Física)
Área (Departamento): Área Cienc.Mater. Ingen.Metal. (Dpto. Ciencia Tecnol.Mater.Fl.)
Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)