Multi-qubit single paramagnetic center for quantum communication and computing

在构建用于量子通信和计算的可扩展量子网络中，开发几个可在固体中光学访问的量子比特是非常重要的。最近，钻石单NV中心一直很感兴趣。在我们的研究中，用~lt；13&gt；C富集态和~lt；12&gt；C富集态的金刚石样品，观察到了单NV中心的4个量子位系统，实现了室温下固体中电子自旋的最长T2。

In construction of scalable quantum network for quantum communication and computing, development of a few optically accessible quantum bits in solid is important. Recently, single NV center in diamond has been interested. In our research, by using <13>^C enriched and <12>^C enriched diamond samples, 4 qubit system of single NV center was observed and the longest T_2 of electron spin in solid at room temperature was realized.