论文标题
近期量子硬件的基于纠缠的体积基准
An entanglement-based volumetric benchmark for near-term quantum hardware
论文作者
论文摘要
我们基于使用图形状态和直接稳定器测量值的生成和验证跨越N Qubits的真正纠缠的生成和验证，为近期量子平台引入了体积基准。我们的基准评估了多个硬件噪声来源的多部分和两分n Qubit纠缠的鲁棒性：量子噪声，量子偏压，cnot和交换门噪声以及读数错误。我们在IBM（IBMQ_BELEM，IBMQ_TORONTO，IBMQ_GUADALUPE和IBMQ_JAKARTA）的多个超导量子平台上演示了我们的基准。 $ n <10 $ Qubits的子集用于图形状态准备和稳定器测量。评估真正的和三义的纠缠见证人，我们报告了$ 5 $ QUBIT的真实纠缠的观察结果，但是稳健的多方纠缠很难以$ n> 4 $ Qubits的形式产生，并识别出与真正多片纠缠的质量密切相关。
We introduce a volumetric benchmark for near-term quantum platforms based on the generation and verification of genuine entanglement across n-qubits using graph states and direct stabilizer measurements. Our benchmark evaluates the robustness of multipartite and bipartite n-qubit entanglement with respect to many sources of hardware noise: qubit decoherence, CNOT and swap gate noise, and readout error. We demonstrate our benchmark on multiple superconducting qubit platforms available from IBM (ibmq_belem, ibmq_toronto, ibmq_guadalupe and ibmq_jakarta). Subsets of $n<10$ qubits are used for graph state preparation and stabilizer measurement. Evaluation of genuine and biseparable entanglement witnesses we report observations of $5$ qubit genuine entanglement, but robust multipartite entanglement is difficult to generate for $n>4$ qubits and identify two-qubit gate noise as strongly correlated with the quality of genuine multipartite entanglement.
