Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
Q: Fachverband Quantenoptik und Photonik
Q 41: Poster – Quantum Technologies II & Laser Technology
Q 41.4: Poster
Mittwoch, 4. März 2026, 17:00–19:00, Philo 2. OG
MEMS scanner mirrors for integration of an optical cavity in an ion trap — •Can Leichtweiß1, Paul Raschdorf2, Jan Müller1, Jonas Vogel1, 3, Janine Hilder1, 3, Björn Lekitsch1, 3, Shanshan Gu-Stoppel2, and Ferdinand Schmidt-Kaler1, 3 — 1QUANTUM, Institut für Physik, 55128 Mainz — 2Fraunhofer-Institut für Siliziumtechnologie, 25524 Itzehoe — 3neQxt GmbH
The high fidelity readout of trapped ion qubits is based on the observation of laser-induced fluorescence. However, photons are randomly scattered in angle, which reduces the collection efficiency and increases the time required for readout. We plan to use the Purcell effect by deploying a resonant optical cavity such that photons are scattered into the cavity mode, which in turn could reduce the qubit detection time to a few µs.
We fabricate and test MEMS mirror devices, which allow for length stabilization and alignment of a high finesse cavity. We will position the cavity waist to the ion position without moving the ion itself, avoiding excess micromotion. Furthermore, a small footprint is required for an integration to an ion trap. We report results from a cavity with a ion-mirror distance of 0.8 mm, characterizing the finesse, waist size and adjustment features. In future, and with enhanced coupling [1], such cavity-enabled ion-light interface may allow for interconnecting trapped ion quantum processor modules.
[1] Takahashi, et al. PRL 124, 013602 (2020)
Keywords: Paul trap; ion trap; optical cavity; MEMS; quantum computer