Erlangen 2022 – scientific programme

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SYPD: PhD Symposium - Solid-state Quantum Emitters Coupled to Optical Microcavities

SYPD 1: Solid-state quantum emitters coupled to optical microcavities

SYPD 1.1: Invited Talk

Monday, March 14, 2022, 16:30–17:00, AKjDPG-H17

Fiber-based microcavities for efficient spin-photon interfaces — •David Hunger — Physikalisches Institut, Karlsruher Institut für Technologie, Karlsruhe, Germany

Optical microcavities are a powerful tool to enhance light-matter interactions and offer the potential to realize efficient interfaces for spins and photons. To achieve large cavity enhancement on a flexible platform, we have developed microscopic Fabry-Perot cavities based on laser-machined optical fibers [1]. We employ such cavities to realize efficient readout of individual solid-state quantum emitters such as NV centers in diamond [2,3] and rare earth ions [4,5,6], with the goal to realize a quantum repeater for long-distance quantum communication, and optically addressable multi-qubit registers as quantum computing nodes. [1] Hunger et al., New J. Phys. 12, 065038 (2010) [2] Kaupp et al., Phys Rev Applied 6, 054010 (2016) [3] Benedikter et al., Phys Rev Applied 7, 024031 (2017) [4] Casabone et al., New J. Phys. 20, 095006 (2018) [5] Casabone et al., Nature Commun. 12, 3570 (2021) [6] Serrano et al., Nature, in print (arxiv:2105.07081)