Berlin 2024 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
TT: Fachverband Tiefe Temperaturen
TT 19: Quantum Coherence (joint session TT/DY)
TT 19.2: Vortrag
Montag, 18. März 2024, 16:45–17:00, H 3025
Efficiency of pulsed electron spin resonance protocols for quantum state storage with phosphorus donors in silicon — •Patricia Oehrl1, 2, Nadezhda Kukharchyk1, 2, 3, Kirill G. Fedorov1, 2, 3, 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, Garching, Germany — 3Munich Center for Quantum Science and Technologies (MCQST), Munich, Germany
The storage of quantum states is considered to be a key element for the successful realization of a multimode quantum network [1]. Solid-state spin ensembles, such as phosphorus donors in silicon, offer exceptional coherence times and resonant transitions in the GHz range [2]. Therefore, they are promising candidates for the realization of quantum memories without frequency conversion techniques. 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 use continuous-wave spectroscopy complemented by pulsed excitation and time-domain detection techniques. To this end, we operate our hybrid system at millikelvin temperatures and moderate static magnetic fields. We investigate the performance of our hybrid system with regard to quantum memory applications by analyzing the storage efficiency based on various pulse shapes and sequences.
[1] M. Pompili et al., Science 372 (2021) 6539
[2] M. Steger et al., Science 336 (2012) 1280
Keywords: Spin Ensemble; Electron Spin Resonance; Quantum Memory