Dynamic control of Purcell enhanced emission of erbium ions in nanoparticles

Bernardo Casabone, Chetan Deshmukh, Shuping Liu, Diana Serrano, Alban Ferrier, Thomas Hümmer, Philippe Goldner, David Hunger and Hugues de Riedmatten ()
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Bernardo Casabone: The Barcelona Institute of Science and Technology
Chetan Deshmukh: The Barcelona Institute of Science and Technology
Shuping Liu: PSL University, CNRS, Institut de Recherche de Chimie Paris
Diana Serrano: PSL University, CNRS, Institut de Recherche de Chimie Paris
Alban Ferrier: PSL University, CNRS, Institut de Recherche de Chimie Paris
Thomas Hümmer: Ludwig-Maximilians-Universität
Philippe Goldner: PSL University, CNRS, Institut de Recherche de Chimie Paris
David Hunger: Physikalisches Institut
Hugues de Riedmatten: The Barcelona Institute of Science and Technology

Nature Communications, 2021, vol. 12, issue 1, 1-7

Abstract: Abstract 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.

Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-23632-9

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DOI: 10.1038/s41467-021-23632-9

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