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TT: Fachverband Tiefe Temperaturen
TT 43: Superconducting Electronics: Qubits
TT 43.9: Vortrag
Mittwoch, 11. März 2026, 11:45–12:00, CHE/0089
Microwave pulse shape optimization for enhanced spin excitation in a 31P:28Si ensemble coupled to a superconducting resonator — Patricia Oehrl1,2, •Ana Strinic1,2, Tahereh Sadat Parvini1,2, and Hans Huebl1,2,3 — 1Walther-Meissner-Institut, Bayerische Akademie der Wissenschaften, Garching, Germany — 2School of Natural Sciences, Technical University of Munich, Garching, Germany — 3Munich Center for Quantum Science and Technology, Munich, Germany
Phosphorus donors in silicon are considered as promising candidates for the realization of microwave quantum memories due to their electron spin transitions in the GHz regime with exceptionally long coherence times [1].
Here, we investigate the transduction of pulsed coherent microwave signals to spin excitations of a spin ensemble.
This effectively pulsed electron spin resonance experiment uses a hybrid system consisting of a superconducting lumped-element microwave resonator coupled to a spin ensemble of phosphorus donors in isotopically engineered silicon.
By modeling the system using an input-output formalism, we identify optimal pulse shapes and coupling parameters for enabling this excitation transfer. The understanding and optimization is of importance for the implementation of efficient quantum state storage protocols, which are of relevance for microwave quantum memory applications as well as quantum sensing.
[1] M. Steger et al., Science 336, 1280 (2012)
Keywords: Spin ensemble; Quantum state storage