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Optical spin-state polarization in a binuclear europium complex towards molecule-based coherent light-spin interfaces

Kumar, Kuppusamy S. 1; Serrano, Diana; Nonat, Aline M.; Heinrich, Benoît; Karmazin, Lydia; Charbonnière, Loïc J.; Goldner, Philippe; Ruben, Mario 1,2
1 Institut für Nanotechnologie (INT), Karlsruher Institut für Technologie (KIT)
2 Institut für Quantenmaterialien und -technologien (IQMT), Karlsruher Institut für Technologie (KIT)


The success of the emerging field of solid-state optical quantum information processing (QIP) critically depends on the access to resonant optical materials. Rare-earth ion (REI)-based molecular systems, whose quantum properties could be tuned taking advantage of molecular engineering strategies, are one of the systems actively pursued for the implementation of QIP schemes. Herein, we demonstrate the efficient polarization of ground-state nuclear spins—a fundamental requirement for all-optical spin initialization and addressing—in a binuclear Eu(III) complex, featuring inhomogeneously broadened $^{5}$D0 → $^{7}$F0 optical transition. At 1.4 K, long-lived spectral holes have been burnt in the transition: homogeneous linewidth (Γ$_{h}$) = 22 ± 1 MHz, which translates as optical coherence lifetime (T$_{2opt}$) = 14.5 ± 0.7 ns, and ground-state spin population lifetime (T$_{1spin}$) = 1.6 ± 0.4 s have been obtained. The results presented in this study could be a progressive step towards the realization of molecule-based coherent light-spin QIP interfaces.

Verlagsausgabe §
DOI: 10.5445/IR/1000131866
Veröffentlicht am 27.04.2021
DOI: 10.1038/s41467-021-22383-x
Zitationen: 10
Web of Science
Zitationen: 8
Zitationen: 11
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Institut für Quantenmaterialien und -technologien (IQMT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 2041-1723
KITopen-ID: 1000131866
HGF-Programm 47.12.02 (POF IV, LK 01) Exploratory Qubits
Erschienen in Nature Communications
Verlag Nature Research
Band 12
Heft 1
Seiten Art.-Nr.: 2152
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 12.04.2021
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