Berlin 2018 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
TT: Fachverband Tiefe Temperaturen
TT 39: Focus Session: Quantum Nanophotonics in Solid State Systems I (joint session HL/TT)
TT 39.14: Vortrag
Dienstag, 13. März 2018, 14:45–15:00, EW 201
Rare-earth doped nanoparticles with millisecond-long spin coherence lifetime — •Diana Serrano1, Jenny Karlsson1, Alexandre Fossati1, Alban Ferrier1,2, Alexandre Tallaire1, and Philippe Goldner1 — 1Institut de Recherche de Chimie Paris (IRCP), UMR 8247 CNRS Chimie-Paristech, 11 rue Pierre et Marie Curie, 75005 Paris — 2Sorbonne Universités, UPMC Université Paris 06, 75005, Paris, France
Nanoscale systems possessing long-lived spins and the ability to coherently couple to light are highly demanded for quantum devices implementations. Several approaches, like NV centers in diamond, semiconductor quantum dots are intensively investigated in the field, where an outstanding challenge is to preserve properties, and especially optical and spin coherence lifetimes, at the nanoscale. Here, we investigate for the first time the spin coherence properties of rare-earth doped nanoparticles. Using all-optical techniques, we observed spins echoes and measured spin coherence lifetimes up to T2=2.9 ms at 5 K. Moreover, we achieve spin T2 extension using all-optical spin dynamical decoupling and observe high fidelity between excitation and echo phases. Rare-earth doped nanoparticles are thus the only reported nano-material in which optically controlled spins with millisecond coherence lifetimes have been observed.
Acknowledgement:
This research work has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 712721 (NanQTech).