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Detection of single ions in a nanoparticle coupled to a fiber cavity

Deshmukh, Chetan; Beattie, Eduardo; Casabone, Bernardo; Grandi, Samuele; Serrano, Diana; Ferrier, Alban; Goldner, Philippe; Hunger, David ORCID iD icon 1,2; Riedmatten, Hugues de
1 Physikalisches Institut (PHI), Karlsruher Institut für Technologie (KIT)
2 Institut für QuantenMaterialien und Technologien (IQMT), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

Many quantum information protocols require the storage and manipulation of information over long times, and its exchange between nodes of a quantum network across long distances. Implementing these protocols requires an advanced quantum hardware, featuring, for example, a register of long-lived and interacting qubits with an efficient optical interface in the telecommunication band. Here we present the Purcell-enhanced detection of single solid-state ions in erbium-doped nanoparticles placed in a fiber cavity, emitting photons at 1536 nm. The open-access design of the cavity allows for complete tunability in both space and frequency, selecting individual particles and ions. The ions are confined in a volume two orders of magnitude smaller than in previous realizations, increasing the probability of finding ions separated by only a few nanometers, which could then interact. We report the detection of individual spectral features presenting saturation of the emission count rate and linewidth, as expected for two-level systems. We also report an uncorrected $g^{(2)}(0)$ of 0.24(5) for the emitted field, confirming the presence of a single emitter. ... mehr


Postprint §
DOI: 10.5445/IR/1000163156
Veröffentlicht am 10.04.2024
Originalveröffentlichung
DOI: 10.1364/OPTICA.491692
Scopus
Zitationen: 5
Web of Science
Zitationen: 5
Dimensions
Zitationen: 9
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für QuantenMaterialien und Technologien (IQMT)
Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 20.10.2023
Sprache Englisch
Identifikator ISSN: 2334-2536
KITopen-ID: 1000163156
HGF-Programm 47.12.04 (POF IV, LK 01) Quantum Networking
Erschienen in Optica
Verlag Optica Publishing Group (OSA)
Band 10
Heft 10
Seiten 1339-1344
Vorab online veröffentlicht am 09.10.2023
Externe Relationen Abstract/Volltext
Nachgewiesen in Dimensions
Web of Science
Scopus
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