7–12 Jul 2024
Viktor-Franz-Hess Haus
Europe/Vienna timezone

Progress towards a fault tolerant microwave-driven two qubit quantum processor utilizing Bayesian statistics for state determination

9 Jul 2024, 17:34
2m
Hörsaal B (Technik) (Viktor-Franz-Hess Haus)

Hörsaal B (Technik)

Viktor-Franz-Hess Haus

Technikerstraße 25a, 6020 Innsbruck, Austria
Poster Quantum Information & Computing Poster session

Speaker

Alexander Onkes (Institut für Quantenoptik, Leibniz Universität Hannover; PTB)

Description

We realize a universal gate-set for quantum computing with microwave nearfields
with trapped ions [1]. $^9Be^+$ ions are trapped in a surface electrode trap with
an integrated microwave electrode. Single ion addressing is done through micromotion
sidebands [2]. We approach entangling infidelity of $10^{-3}$ with Mølmer-Sørensen
gates. Based on the work done by [3] we investigate further use of Bayesian statistics
for flourescence readout and state discrimination. The state determination can be
improved by techniques to dynamically reduce readout time based on a probability
threshold. Further, we will report on utilizing belief information for each state
determination together with a time series database for post-analysis. We plan to
implement a Bayes filter on top of the time series data from our experiments to
track the experiment setup condition.
[1] C. Ospelkaus et al., Phys. Rev. Lett. 101 090502 (2008)
[2] G. Zarantonello et al., Phys. Rev. Lett. 123 260503 (2019)
[3] A. H. Myerson et al., Phys. Rev. Lett. 100 200502 (2008)

Author

Alexander Onkes (Institut für Quantenoptik, Leibniz Universität Hannover; PTB)

Co-authors

Hardik Mendpara (Institut für Quantenoptik, Leibniz Universität Hannover; PTB) Nicolas Pulido Mateo (Institut für Quantenoptik, Leibniz Universität Hannover; PTB) Markus Duwe (Institut für Quantenoptik, Leibniz Universität Hannover; PTB) Ludwig Krinner (Institut für Quantenoptik, Leibniz Universität Hannover; PTB) Amado Bautista-Salvador (Institut für Quantenoptik, Leibniz Universität Hannover; PTB) Giorgio Zarantonello (Institut für Quantenoptik, Leibniz Universität Hannover; PTB) Henning Hahn (Institut für Quantenoptik, Leibniz Universität Hannover; PTB) Christian Ospelkaus (Institut für Quantenoptik, Leibniz Universität Hannover; PTB)

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