Affiliation:
1. ICFO-Institut de Ciencies Fotoniques
2. Institut de Recherche de Chimie Paris
3. Sorbonne Université
4. Karlsruher Institut für Technologie
5. Karlsruhe Insitute for Technology
6. ICREA-Institució Catalana de Recerca i Estudis Avançats
Abstract
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. Our fully
fiber-integrated system is an important step towards the realization
of the initially envisioned quantum hardware.
Funder
Agence Nationale de la
Recherche
Horizon 2020 Framework
Programme
Gordon and Betty Moore
Foundation
Agencia Estatal de
Investigación
FUNDACIÓ Privada MIR-PUIG
Fundación Cellex
Generalitat de Catalunya
Subject
Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Cited by
2 articles.
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