标题： 自旋量子比特用于费米子模拟的共振双量子比特门 显示英文标题

标题： Resonant two-qubit gates for fermionic simulations with spin qubits

摘要： 在门定义的半导体自旋量子比特中，高度可调的海森堡交换相互作用被用于实现费米子双量子比特门，如CZ和SWAP。 然而，更广泛的费米子模拟（fSim）门家族仍未被探索，并有可能提升近期量子模拟算法的性能。 在这里，我们展示了一种方法，使用结合基带和共振交换驱动的单个脉冲在自旋量子比特中实现fSim门集。 这种方法最小化了门时间与驱动幅度，减轻了退相干和串扰。 我们通过在锗中的两个空穴自旋之间实现共振iSWAP门来验证其有效性，通过交错随机基准测试提取的保真度达到93.8(5)%。 量子过程层析成像证实了精确的门校准，并确定了量子比特退相干为主要误差来源。 我们的结果建立了一条通往基于自旋的量子处理器的通用且高效的双量子比特门集的实用路径。 显示英文摘要

摘要： In gate-defined semiconductor spin qubits, the highly tunable Heisenberg exchange interaction is leveraged to implement fermionic two-qubit gates such as CZ and SWAP. However, the broader family of fermionic simulation (fSim) gates remains unexplored, and has the potential to enhance the performance of near-term quantum simulation algorithms. Here, we demonstrate a method to implement the fSim gate set in spin qubits using a single pulse combining baseband and resonant exchange drives. This approach minimizes gate duration and drive amplitude, mitigating decoherence and crosstalk. We validate its effectiveness by realizing a resonant iSWAP gate between two hole spins in germanium, achieving a fidelity of 93.8(5)% extracted with interleaved randomized benchmarking. Quantum process tomography confirms accurate gate calibration and identifies qubit decoherence as the dominant error source. Our results establish a practical route toward a versatile and efficient two-qubit gate set for spin-based quantum processors.