论文标题
三分之一状态的准备
Preparation of 3-qubit states
论文作者
论文摘要
如果其所有幅度都是实数，我们将称其为真实。我们表明，可以使用$ r_y（θ）$门和最多四个受控的 - $ z $门的任何真正的3 Qubit状态，我们猜想四个是最佳的。我们还提出了一种算法，与Znidaric，Giraud和Georgeot给出的2008年算法不同，该算法使用本地大门和最多三个受控的 - $ Z $大门来准备任何3个Qubit State。视频可以在https://youtu.be/lidyss-re-o- and https://youtu.be/kne0vq7gyzq上找到我们的方法如何适用于两量和三量状态。
We will call a pure qubit state real if all its amplitudes are real numbers. We show that any real 3-qubit state can be prepared using $R_y(θ)$ gates and at most four controlled-$Z$ gates, and we conjecture that four is optimal. We also present an algorithm -- different from the 2008 algorithm given by Znidaric, Giraud and Georgeot -- that prepares any 3-qubit state using local gates and at most three controlled-$Z$ gates. Videos showing how our method works for two- and three-qubit states can be found at https://youtu.be/LIdYSs-rE-o and https://youtu.be/Kne0Vq7gyzQ
