A concentrated array of copper porphyrin candidate qubits

Chung Jui Yu, Matthew D. Krzyaniak, Majed S. Fataftah, Michael R. Wasielewski, Danna E. Freedman

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Abstract

Synthetic chemistry offers a pathway to realize atomically precise arrays of qubits, the smallest unit of a quantum information science system. We harnessed framework chemistry to create an array of qubit candidates, featuring one qubit every 13.6 Å, by synthesizing the new copper(ii) variant of the porphyrinic metal-organic framework PCN-224. We subjected the framework to pulse-electron paramagnetic resonance (EPR) measurements, establishing spin coherence at temperatures up to 80 K within a fully spin concentrated framework. Observation of Rabi oscillations further support the viability of the qubits within these arrays. To interrogate the spin dynamics of qubit arrays, we investigated spin-lattice relaxation, T1, through a combination of pulse-EPR and alternating current (ac) magnetic susceptibility measurements. These data revealed distinct vibrational environments within the frameworks that contribute to spin dynamics. The aggregate results establish a pathway for a synthetic approach to create spatially precise networks of qubits.

Original languageEnglish
Pages (from-to)1702-1708
Number of pages7
JournalChemical Science
Volume10
Issue number6
DOIs
Publication statusPublished - Jan 1 2019

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ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Yu, C. J., Krzyaniak, M. D., Fataftah, M. S., Wasielewski, M. R., & Freedman, D. E. (2019). A concentrated array of copper porphyrin candidate qubits. Chemical Science, 10(6), 1702-1708. https://doi.org/10.1039/c8sc04435j