The Quantum Scientific Computing Open User Testbed (QSCOUT) at Sandia National Laboratories is a small trapped-ion quantum computer with high-fidelity, customizable Raman gates available to the scientific community. One of QSCOUT’s more unique features is full parameterization of not only the one-qubit gate set but also the native two-qubit Mølmer-Sørensen (MS) gate. Here, we present the empirical realization and coherent error budget of our continuously parameterized MS gates and then discuss how the gates were crucial to recent user project collaborations. In one collaboration, we use the gates for coherent error injection to investigate error characterization and mitigation with hidden inverses. In another, we directly probe the gates themselves via an efficient verification method for continuously parameterized gates known as randomized analog verification.
*Sandia National Laboratories is managed and operated by NTESS, LLC, a subsidiary of Honeywell International, Inc. for the US DOE NNSA under contract DE-NA0003525. Oak Ridge National Laboratory is operated by UT-Battelle for the US DOE under contract DE-AC05-00OR22725. This work is in part funded by the US DOE Office of Science ASCR Quantum Testbed Program and Quantum Testbed Pathfinder Program along with additional support from DOE, NSF, ARO, and AFOSR. The views expressed here do not necessarily represent the views of the DOE or the US Government. SAND2022-14343A.
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Publication:S. M. Clark et al., IEEE Trans. Quant. Eng. 2, 3102832 (2021) S. Majumder et al., arXiv:2205.14225 (2022) R. Shaffer et al., arXiv:2205.13074 (2022)
Presenters
Christopher G Yale
Sandia National Laboratories
Authors
Christopher G Yale
Sandia National Laboratories
Ashlyn D Burch
Sandia National Laboratories
Matthew N Chow
Sandia National Labs; University of New Mexico; CQuIC
Sandia National Laboratories; University of New Mexico; CQuIC
