A Triple-Site Gd3 Carborane Metal–Organic Framework toward Scalable Quantum Computing

Bartolomé, Elena ; Li, Xiao-Bao ; Arauzo, Ana (Universidad de Zaragoza) ; Luzón, Javier (Universidad de Zaragoza) ; García-Rubio, Inés ; Planas, José Giner

Resumen: Metal–organic frameworks (MOFs) incorporating arrays of molecular spin qubits (quMOFs) offer a promising pathway toward scalable quantum computing. In this work, we introduce a novel quMOF, {[(Gd)3(mCB-L)4(NO3)(DMF)x]n·Solv}, constructed with a carborane linker and Gd(III) ions at three distinct coordination sites. We thoroughly characterize its magneto-thermal properties using dc/ac magnetometry, X-ray absorption spectroscopy, X-ray magnetic circular dichroism, and heat capacity measurements. The quantum computing potential is demonstrated through ab initio calculations and pulsed electron paramagnetic resonance on GdY-diluted analogues, revealing Tm= 0.7 μs and Rabi oscillations persisting up to 50 K. Each of the three isolated Gd(i) sites in GdY-MOFs functions as an 8-level qudit, accessible via X-band transitions. Notably, the triple-site Gd3 quMOF provides an unprecedented qudit with d = (2S + 1)3 = 512 states, capable of encoding up to 9 qubits, marking a significant advance in the scalability of molecular-based quantum computing.

Idioma: Inglés

DOI: 10.1021/acsami.5c06002

Año: 2025

Publicado en: ACS applied materials & interfaces (2025), [14 pp.]
ISSN: 1944-8244

Financiación: info:eu-repo/grantAgreement/ES/AEI/CEX2023-001263-S
Financiación: info:eu-repo/grantAgreement/ES/DGA/E09-23R
Financiación: info:eu-repo/grantAgreement/ES/DGA/E12-23R
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2021-127287NB-I00
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2022-136892NB-I00
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2022-138492NB-I00
Financiación: info:eu-repo/grantAgreement/ES/MICIU/CEX2023-001286-S
Financiación: info:eu-repo/grantAgreement/ES/MICIU/PRTR-C17.I1

Tipo y forma: Artículo (Versión definitiva)

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