QSCOUT: Continuously parameterized Mølmer-Sørensen gates for quantum computing circuits (Part II)

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.