Synthesis of Eu(HCOO)$_3$ and Eu(HCOO)$_{3}\cdot$(HCONH$_2$)$_2$ crystals and observation of their $^5$D$_{0}\rightarrow ^{7}$F$_0$ transition for quantum information systems

Zachary W. Riedel; Donny R. Pearson; Manohar H. Karigerasi; Julio A. N. T. Soares; Elizabeth A. Goldschmidt; Daniel P. Shoemaker

doi:10.1016/j.jlumin.2022.119006

paper

Synthesis of Eu(HCOO) $_{3}$ and Eu(HCOO) $_{3} \cdot$ (HCONH $_{2}$ ) $_{2}$ crystals and observation of their $^{5}$ D $_{0} \to^{7}$ F $_{0}$ transition for quantum information systems

arXiv:2203.04487 · doi:10.1016/j.jlumin.2022.119006

Abstract

Two stoichiometric metal-organic frameworks containing Eu $^{3 +}$ cations are probed as candidates for photon-based quantum information storage. Synthesis procedures for growing 0.2 mm, rod-shaped Eu(HCOO) $_{3}$ and 1-3 mm, rhombohedral Eu(HCOO) $_{3} \cdot$ (HCONH $_{2}$ ) $_{2}$ single crystals are presented with visible precipitation as soon as 1 h into heating for Eu(HCOO) $_{3}$ and 24 h for Eu(HCOO) $_{3} \cdot$ (HCONH $_{2}$ ) $_{2}$ . Room temperature and 1.4 K photoluminescence measurements of the $^{5}$ D $_{0} \to^{7}$ F $_{J}$ transitions of Eu $^{3 +}$ are analyzed for both compounds. Comparisons of peak width and intensity are discussed along with the notable first report for both of the $^{5}$ D $_{0} \to^{7}$ F $_{0}$ transition, the hyperfine structure of which has potential use in quantum memory applications. The air instability of Eu(HCOO) $_{3} \cdot$ (HCONH $_{2}$ ) $_{2}$ and the transformation of its photoluminescence properties are discussed.

15 pages, 16 figures

Synthesis of Eu(HCOO)3​ and Eu(HCOO)3​⋅(HCONH2​)2​ crystals and observation of their 5D0​→7F0​ transition for quantum information systems

Abstract

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Synthesis of Eu(HCOO) $_{3}$ and Eu(HCOO) $_{3} \cdot$ (HCONH $_{2}$ ) $_{2}$ crystals and observation of their $^{5}$ D $_{0} \to^{7}$ F $_{0}$ transition for quantum information systems