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Dynamic control of Purcell enhanced emission of erbium ions in nanoparticles

Casabone, Bernardo; Deshmukh, Chetan; Liu, Shuping; Serrano, Diana; Ferrier, Alban; Hümmer, Thomas; Goldner, Philippe; Hunger, David ORCID iD icon 1; Riedmatten, Hugues de
1 Institut für Quantenmaterialien und -technologien (IQMT), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):
The interaction of single quantum emitters with an optical cavity enables the realization of efficient spin-photon interfaces, an essential resource for quantum networks. The dynamical control of the spontaneous emission rate of quantum emitters in cavities has important implications in quantum technologies, e.g., for shaping the emitted photons’ waveform or for driving coherently the optical transition while preventing photon emission. Here we demonstrate the dynamical control of the Purcell enhanced emission of a small ensemble of erbium ions doped into a nanoparticle. By embedding the nanoparticles into a fully tunable high finesse fiber based optical microcavity, we demonstrate a median Purcell factor of 15 for the ensemble of ions. We also show that we can dynamically control the Purcell enhanced emission by tuning the cavity on and out of resonance, by controlling its length with sub-nanometer precision on a time scale more than two orders of magnitude faster than the natural lifetime of the erbium ions. This capability opens prospects for the realization of efficient nanoscale quantum interfaces between solid-state spins and single telecom photons with controllable waveform, for non-destructive detection of photonic qubits, and for the realization of quantum gates between rare-earth ion qubits coupled to an optical cavity.

Verlagsausgabe §
DOI: 10.5445/IR/1000133820
Veröffentlicht am 27.08.2021
DOI: 10.1038/s41467-021-23632-9
Zitationen: 14
Web of Science
Zitationen: 14
Zitationen: 18
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Quantenmaterialien und -technologien (IQMT)
Universität Karlsruhe (TH) – Interfakultative Einrichtungen (Interfakultative Einrichtungen)
Karlsruhe School of Optics & Photonics (KSOP)
Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 12.2021
Sprache Englisch
Identifikator ISSN: 2041-1723
KITopen-ID: 1000133820
HGF-Programm 47.12.04 (POF IV, LK 01) Quantum Networking
Erschienen in Nature Communications
Verlag Nature Research
Band 12
Heft 1
Seiten Art. Nr.: 3570
Projektinformation NanOQTech (EU, H2020, 712721)
Q.Link.X (BMBF, BUND HTS, 16KIS0879)
SQUARE (EU, H2020, 820391)
Vorab online veröffentlicht am 11.06.2021
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