Year: 2021
Type: article
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.
Source: Nature Communications
Authors: Bernardo Casabone, Chetan Deshmukh, Shuping Liu, Diana Serrano, Alban Ferrier, Thomas Hümmer, Philippe Goldner, David Hunger, Hugues de Riedmatten
Institutions: Institute of Photonic Sciences, Barcelona Institute of Science and Technology, Centre National de la Recherche Scientifique, Chimie ParisTech - PSL, Université Paris Sciences et Lettres, Southern University of Science and Technology, Institut de Recherche de Chimie Paris, Sorbonne Université, Ludwig-Maximilians-Universität München, Karlsruhe Institute of Technology, Institució Catalana de Recerca i Estudis Avançats
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $5,560
Funders: Gordon and Betty Moore Foundation, Ministerio de Ciencia, Innovación y Universidades, Centres de Recerca de Catalunya, Institut de Ciències Fotòniques, European Commission, Bundesministerium für Bildung und Forschung, Generalitat de Catalunya, Horizon 2020 Framework Programme, Agència de Gestió d'Ajuts Universitaris i de Recerca, Agencia Estatal de Investigación
Awards: G1908469581, ICFOstepstone PhD Programme for Early-Stage Researchers in Photonics, G2763573136, Nanoscale Systems for Optical Quantum Technologies, G4239348134, G434337789, Linking Nodes for The Quantum Internet, G5555131222, G6482940084, G7062607754, G7425137858, G7963235497, G8180681537, G8684520763, Scalable Rare Earth Ion Quantum Computing Nodes, G8940238295, G924867782
OpenAlex ID: W3000890813