论文标题
高保真状态制备，量子控制和同位素富集的硅自旋量子轴的读数
High fidelity state preparation, quantum control, and readout of an isotopically enriched silicon spin qubit
论文作者
论文摘要
量子系统必须以高保真度制备，控制和测量，以执行复杂的量子算法。硅自旋量子箱中的控制保真度大大改善，但状态准备和读数保真度通常很差。通过低电子温度并采用高带宽的低温放大器，我们证明了单个Qubit读数可见性> 99％，超过了量子误差校正的阈值。在同一设备中，我们达到平均单量子控制保真度> 99.95％。我们的结果表明，硅旋转量子位可以以高总体操作保真度进行操作。
Quantum systems must be prepared, controlled, and measured with high fidelity in order to perform complex quantum algorithms. Control fidelities have greatly improved in silicon spin qubits, but state preparation and readout fidelities have generally been poor. By operating with low electron temperatures and employing high-bandwidth cryogenic amplifiers, we demonstrate single qubit readout visibilities >99%, exceeding the threshold for quantum error correction. In the same device, we achieve average single qubit control fidelities >99.95%. Our results show that silicon spin qubits can be operated with high overall operation fidelity.
