Regensburg 2022 – wissenschaftliches Programm
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DY: Fachverband Dynamik und Statistische Physik
DY 36: Quantum Coherence and Quantum Information Systems (joint session TT/DY)
DY 36.7: Vortrag
Donnerstag, 8. September 2022, 11:15–11:30, H22
Quantum memory based on spin donors in silicon — •Patricia Oehrl1,2, Julian Franz1,2, Florian Fesquet1,2, Nadezhda Kukharchyk1,2, Kirill G. Fedorov1,2, Rudolf Gross1,2,3, and Hans Huebl1,2,3 — 1Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, Garching, Germany — 2Physik-Department, Technische Universität München, Garching, Germany — 3Munich Center for Quantum Science and Technologies (MCQST), Germany
Quantum memories are considered as key elements for the successful realization of quantum communication [1]. In order to allow for the connection of several quantum nodes into a quantum network without frequency conversion, several requirements have to be met such as frequency compatibility and connectability to the quantum system of choice. As superconducting quantum processors 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 present experimental results on the storage of coherent microwave states and their retrieval using a Hahn-echo type pulse sequence. In detail, we discuss the impact of the resonator design, the classical storage times and outline strategies towards storing quantum signals.
We acknowledge financial support from the Federal Ministry of Education and Research of Germany (project number 16KISQ036).
[1] H. J. Kimble, Nature 453, 1023 (2008)
[2] C. Gezes et al., Phys. Rev. X 4, 021049 (2014)