论文标题
IBM量子计算机上复合脉冲的实验证明
Experimental demonstration of composite pulses on IBM's quantum computer
论文作者
论文摘要
我们使用开放式IBM的量子处理器之一，基于超导式transmon码头，对各种复合脉冲序列进行了全面的实验测试。我们通过利用IBM Quantum提供的低级访问后端的机会来实现量子脉冲控制的明确脉冲控制。我们获得了各种宽带，窄带和通带复合脉冲的激发曲线，从而产生任何预选的目标概率，范围从零到一个。我们还测试了通用复合脉冲，以补偿任何实验参数中的误差。在所有实验中，我们都发现理论和实验激发曲线之间有着极好的一致性。这证明了复合脉冲是一种非常有效且柔性的量子控制工具，也是IBM量子处理器的高质量。作为一个极端的例子，我们对多达1001个脉冲的复合序列进行测试并观察到明显的窄带激发曲线。
We perform comprehensive experimental tests of various composite pulse sequences using one of open-access IBM's quantum processors, based on superconducting transmon qubits. We implement explicit pulse control of the qubit by making use of the opportunity of low-level access to the backend, provided by IBM Quantum. We obtain the excitation profiles for a huge variety of broadband, narrowband, and passband composite pulses, producing any pre-chosen target probabilities, ranging from zero to one. We also test universal composite pulses which compensate errors in any experimental parameter. In all experiments, we find excellent agreement between theoretical and experimental excitation profiles. This proves both the composite pulses as a very efficient and flexible quantum control tool and the high quality of the IBM quantum processor. As an extreme example, we test and observe a pronounced narrowband excitation profile for a composite sequence of as many as 1001 pulses.
