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TT: Fachverband Tiefe Temperaturen
TT 11: Superconductivity: Poster
TT 11.54: Poster
Montag, 17. März 2025, 15:00–18:00, P4
Evaluating Spin Ensembles Based on Phosphorus Donors for Quantum Memory Applications — •Andreas Dunaev1,2, Patricia Oehrl1,2, Rudolf Gross1,2,3, and Hans Huebl1,2,3 — 1Walther-Meißner-Institut, Bayerische Akademie der Wissenschaften, Garching, Germany — 2School of Natural Sciences, Technische Universität München, Garching, Germany — 3Munich Center for Quantum Science and Technology (MCQST), Munich, Germany
Solid-state spin ensembles show great potential for applications in quantum memory devices due to their long coherence times and compatibility with superconducting quantum circuits [1]. Crucial requirements for the application as a memory platform are that the stored information can be accessed and the storage capacity can actively be reset [2]. Here, we discuss an electron spin ensemble of phosphorus donors in silicon coupled to a superconducting resonator in this context. In detail, we present the characterization of this coupled system and demonstrate the storage of classical pulses using a Hahn-echo pulse sequence at temperatures of 4K, moderate magnetic fields, and GHz frequencies. In addition, we introduce the concept of an active reset of the spin ensemble using infrared light. We compare our findings to an input-output model.
[1] A. Morello et al., Adv. Quantum Technol. 3, 2000005 (2020)
[2] J. O’Sullivan et al., Phys. Rev. X 12, 041014 (2022)
Keywords: Electron Spin Resonance; Spin Ensemble; Quantum Storage; Quantum Sensing