Berlin 2024 – scientific programme
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TT: Fachverband Tiefe Temperaturen
TT 18: Superconductivity: Poster
TT 18.53: Poster
Monday, March 18, 2024, 15:00–18:00, Poster C
Broadband ESR spectroscopy of Er:Y2SiO5 at mK temperatures — •Jianpeng Chen1,2, Georg Mair1,2, Ana Strinic1,2,3, Chiun Fu1,2, Achim Marx1,2, Kirill Fedorov1,2,3, Hans Huebl1,2,3, Rudolf Gross1,2,3, and Nadezhda Kukharchyk1,2,3 — 1Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, Garching, Germany — 2Technical University of Munich, School of Natural Sciences, Garching,Germany — 3Munich Center for Quantum Science and Technology, Munich, Germany
Crystals doped with rare-earth ions are promising for the implementation of quantum memories, which are frequency-compatible with superconducting quantum circuits operated in the microwave regime. Erbium-167 is an ideal candidate for a microwave-addressed quantum memory since it exhibits ZEro First-Order Zeeman (ZEFOZ) transitions at low magnetic fields [1], Here, we present broadband ESR spectroscopy data [2] of Er:Y2SiO5 measured at millikelvin temperatures. With a goal to identify the optimal transitions for coherent microwave storage. Our results show that Er:Y2SiO5 is promising for encoding quantum information for longer times within ZEFOZ states at microwave frequencies.
[1] A. Ortu et al., Nat. Mater 17, 671 (2018)
[2] A. Strinic et al., DPG Spring Meeting (2023)
Keywords: quantum memory; spin ensemble; microwave quantum systems; quantum communication; ultra-low temperatures