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arXiv · 1805.06806

Robust entanglement gates for trapped-ion qubits

Yotam Shapira·Ravid Shaniv·Tom Manovitz·Nitzan Akerman·Roee Ozeri
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Abstract

High-fidelity two-qubit entangling gates play an important role in many quantum information processing tasks and are a necessary building block for constructing a universal quantum computer. Such high-fidelity gates have been demonstrated on trapped-ion qubits, however, control errors and noise in gate parameters may still lead to reduced fidelity. Here we propose and demonstrate a general family of two-qubit entangling gates which are robust to different sources of noise and control errors. These gates generalize the celebrated M{\o}lmer-S{\o}rensen gate by using multi-tone drives. We experimentally implemented several of the proposed gates on $^{88}\text{Sr}^{+}$ ions trapped in a linear Paul trap, and verified their resilience.

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Yotam Shapira, Ravid Shaniv, Tom Manovitz, Nitzan Akerman, Roee Ozeri. 2018-05-17. Robust entanglement gates for trapped-ion qubits. https://doi.org/10.1103/physrevlett.121.180502

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