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Peer-reviewedCC BYInorganic chemistry

Metalloporphyrin Zr-MOF Nanoparticles Film for Device Integration of Spin Qubits and Qudits.

  • Javier Serrano-Oiza1
  • Inés Tejedor1
  • Eva Natividad1
  • Arnaud Hemmerle2
  • Philippe Fontaine2
  • Valentin Novikov3,4
  • Guillem Aromí3,4
  • Ignacio Gascón1
  • Olivier Roubeau1
4 affiliations
  1. 1Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC - Universidad de Zaragoza , Zaragoza50009, Spain.
  2. 2Synchrotron SOLEIL, L'Orme des Merisiers, Départementale 128, Saint Aubin91190, France.
  3. 3Departament de Química Inorgànica i Orgànica, Universitat de Barcelona, Diagonal 645, Barcelona08028, Spain.
  4. 4Institute of Nanoscience and Nanotechnology of the University of Barcelona (IN2UB), Barcelona08028, Spain.
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Abstract

Integration of molecular spin qubits onto superconducting circuits is one of the current proposals to build a hybrid quantum processor, in which their coupling to resonators would allow complex coherent quantum operations. As an alternative to large magnetically dilute crystals or concentrated nanoscale deposits of paramagnetic molecules studied so far, we consider here preformed nanoparticles of a Zr(IV)-based 3D MOF doped with Cu(II) and V(IV)O metalloporphyrin. Highly crystalline, phase-pure nanoparticles are obtained with an adjustable number of spin carriers and a homogeneous size that is adequate for nanoconstrictions in superconducting resonators. Continuous-wave and time-domain EPR spectroscopy show that the Cu(II) and V(IV) spins in these particles are potential qubits and qudits, respectively, with robust quantum coherence. These nanoparticles form good dispersions in methanol-chloroform mixtures, which allows the formation of monolayers of densely packed particles at the air-water interface. These Langmuir films are successfully transferred to very different substrates, including Nb resonators, homogeneously covering their most sensitive areas, i.e., the edges of the superconducting lines. Finally, the quantum coherence of the qubit nodes is maintained in the transferred nanoparticles, thereby demonstrating the viability of the present approach for the development of hybrid quantum processors.

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Cite

BibTeXRIS
BibTeX
@article{serranooiza2026metalloporphyrin,
  title = {{Metalloporphyrin Zr-MOF Nanoparticles Film for Device Integration of Spin Qubits and Qudits.}},
  author = {Javier Serrano-Oiza and Inés Tejedor and Eva Natividad and Arnaud Hemmerle and Philippe Fontaine and Valentin Novikov and Guillem Aromí and Ignacio Gascón and Olivier Roubeau},
  journal = {Inorganic chemistry},
  year = {2026},
  month = oct,
  doi = {10.1021/acs.inorgchem.6c03040},
  url = {https://europepmc.org/article/MED/42916302},
  note = {CC BY},
}
RIS
TY  - JOUR
TI  - Metalloporphyrin Zr-MOF Nanoparticles Film for Device Integration of Spin Qubits and Qudits.
AU  - Javier Serrano-Oiza
AU  - Inés Tejedor
AU  - Eva Natividad
AU  - Arnaud Hemmerle
AU  - Philippe Fontaine
AU  - Valentin Novikov
AU  - Guillem Aromí
AU  - Ignacio Gascón
AU  - Olivier Roubeau
PY  - 2026
DA  - 2026/10/01
JO  - Inorganic chemistry
DO  - 10.1021/acs.inorgchem.6c03040
UR  - https://europepmc.org/article/MED/42916302
AB  - Integration of molecular spin qubits onto superconducting circuits is one of the current proposals to build a hybrid quantum processor, in which their coupling to resonators would allow complex coherent quantum operations. As an alternative to large magnetically dilute crystals or concentrated nanoscale deposits of paramagnetic molecules studied so far, we consider here preformed nanoparticles of a Zr(IV)-based 3D MOF doped with Cu(II) and V(IV)O metalloporphyrin. Highly crystalline, phase-pure nanoparticles are obtained with an adjustable number of spin carriers and a homogeneous size that is adequate for nanoconstrictions in superconducting resonators. Continuous-wave and time-domain EPR spectroscopy show that the Cu(II) and V(IV) spins in these particles are potential qubits and qudits, respectively, with robust quantum coherence. These nanoparticles form good dispersions in methanol-chloroform mixtures, which allows the formation of monolayers of densely packed particles at the air-water interface. These Langmuir films are successfully transferred to very different substrates, including Nb resonators, homogeneously covering their most sensitive areas, i.e., the edges of the superconducting lines. Finally, the quantum coherence of the qubit nodes is maintained in the transferred nanoparticles, thereby demonstrating the viability of the present approach for the development of hybrid quantum processors.
SN  - 0020-1669
SN  - 1520-510X
ER  -