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Q: Fachverband Quantenoptik und Photonik
Q 23: Quantum Information I
Q 23.5: Poster
Tuesday, March 15, 2022, 16:30–18:30, P
Towards benchmarking two-qubit quantum processor — •Hardik Mendpara1,2, Nicolas Pulido-Mateo1,2, Markus Duwe1,2, Giorgio Zarantonello3, Henning Hahn4, Amado Bautista-Salvador1,2,4, Ludwig Krinner1,2, and Christian Ospelkaus1,2,4 — 1Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, 30167 Hannover — 2PTB, Bundesallee 100, 38116 Braunschweig — 3National Institute of Standards and Technology, 325 Broadway, Boulder, CO 80305, USA — 4QUDORA Technologies GmbH
A prerequisite for a scalable quantum computing platform is to perform elementary gates with a low rate of error. One can quantify the error per gate using randomized benchmarking schemes which are independent of the state-preparation and measurement error [1,2]. Here, we implement the elementary gates (single- and two-qubit gates) using microwaves. The control fields are generated by microwave conductors embedded directly into the trap structure. Using this fully integrated microwave approach, we obtain a preliminary infidelity of 10−4 for single-qubit gates and approaching 10−3 for two-qubit operations [3]. Further, to better characterize the performance of two-qubit entangling gates, we will report on our recent progress in benchmarking our two-qubit quantum processor in a computational context using the protocol described in [1,2].
[1] J. Gaebler et al., Phys. Rev. Lett. 109, 179902 (2012)
[2] A. Erhard et al., Nat. Commun. 10, 5347 (2019)
[3] G. Zarantonello et al., Phys. Rev. Lett. 123 260503 (2019)