SKM 2023 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 54: Quantum Coherence and Quantum Information Systems II
TT 54.9: Vortrag
Donnerstag, 30. März 2023, 17:15–17:30, HSZ 304
Quantum state storage in spin ensembles — •Patricia Oehrl1,2, Julian Franz1,2, Manuel Müller1,2, Nadezhda Kukharchyk1,2,3, Kirill G. Fedorov1,2, Rudolf Gross1,2,3, and Hans Huebl1,2,3 — 1Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, Garching, Germany — 2Technical University of Munich, TUM School of Natural Sciences, Physics Department, Garching, Germany — 3Munich Center for Quantum Science and Technologies (MCQST), Munich, Germany
The storage of quantum states is considered as a key element for successful realization of a multimode quantum network, enabling various applications, such as secure communication and distributed quantum computing [1]. In order to allow for connection of multiple quantum nodes without frequency conversion, several requirements have to be met, such as frequency compatibility and connectability between chosen quantum systems. As superconducting quantum circuits operate in the microwave regime, solid-state spin ensembles with their exceptional coherence times are promising candidates [2]. Here, we present a hybrid system consisting of a superconducting lumped-element microwave resonator coupled to a phosphorus donor electron spin ensemble hosted in isotopically engineered silicon. We show experimental results toward the storage of quantum states and their retrieval based on Hahn-echo type pulse sequences.
We acknowledge financial support from the Federal Ministry of Education and Research of Germany (project number 16KISQ036).
[1] M. Pompili et al., Science 372, 6539 (2021)
[2] M. Steger et al., Science 336, 1280 (2012)