论文标题
基于Ramsey模式的超导量子寄存器上的Picsecond操作
Picosecond operations on superconducting quantum register based on Ramsey patterns
论文作者
论文摘要
提出了一个超快量子控制概念，以减少单个和多个超导码位的操作持续时间。它是基于单极性皮秒控制脉冲引起的拉姆齐条纹的产生。该概念的关键作用是通过及时向前和向后传播的Qubit状态的干扰来发挥的。对照脉冲的形状和持续时间对干扰模式的对比的影响在拉姆齐的范式中揭示了。开发了用于观察拉姆西振荡和实施各种门操作的协议。我们还建议一种概念工程解决方案，用于创建具有所需形状和振幅的所需的皮秒控制脉冲。证明这使得可以以超过99％的忠诚度控制系统的量子状态。
An ultrafast qubit control concept is proposed to reduce the duration of operations with a single and multiple superconducting qubits. It is based on the generation of Ramsey fringes due to unipolar picosecond control pulses. The key role in the concept is played by the interference of waves of qubit states population propagating forward and backward in time. The influence of the shape and duration of control pulses on the contrast of the interference pattern is revealed in the frame of Ramsey's paradigm. Protocols for observation of Ramsey oscillations and implementation of various gate operations are developed. We also suggest a notional engineering solution for creating the required picosecond control pulses with desired shape and amplitude. It is demonstrated that this makes it possible to control the quantum states of the system with the fidelity of more than 99%.
