论文标题
基于实时的CCD的单独捕获量子量子
Real-time capable CCD-based individual trapped-ion qubit measurement
论文作者
论文摘要
个体量读数是量子模拟和量子计算的关键要素。此外，此读数必须实时进行，以实现量子错误校正协议的应用。在本文中，证明了具有实时处理能力输出的EMCCD摄像机的功能，以确定单个$^9 $ be $^+$ ion的量子状态，并探索了所需的定时序列。结果与基于PMT的检测相当。报告了有关$^9 $ be $^+$ $ QUBIT状态的实验。讨论了误差源和检测系统中的串扰量。由于状态准备中已知问题和测量过程的错误率确定为约0.5％。
Individual-qubit readout is a key ingredient for quantum simulation and quantum computation. Furthermore, this readout must take place in real-time to enable the application of quantum error-correction protocols. In this paper the capability of an EMCCD camera with a real-time processing capable output is demonstrated to determine the quantum state of a single $^9$Be$^+$ ion and the required timing sequences are explored. The results are comparable to a PMT based detection. Experiments on the individual detection of $^9$Be$^+$ qubit states undergoing coherent excitation are reported. Sources of error and the amount of crosstalk in the detection system are discussed. Error rates due to known problems in the state preparation and measurement processes were determined to be approximately 0.5 %.
