Humphreys Peter C, Kolthammer W Steven, Nunn Joshua, Barbieri Marco, Datta Animesh, Walmsley Ian A
Department of Physics, Clarendon Laboratory, University of Oxford, Oxford OX1 3PU, United Kingdom.
Department of Physics, Clarendon Laboratory, University of Oxford, Oxford OX1 3PU, United Kingdom and Dipartimento di Scienze, Universit degli Studi Roma Tre, Via della Vasca Navale 84, 00154 Rome, Italy.
Phys Rev Lett. 2014 Sep 26;113(13):130502. doi: 10.1103/PhysRevLett.113.130502. Epub 2014 Sep 25.
We develop a scheme for time-frequency encoded continuous-variable cluster-state quantum computing using quantum memories. In particular, we propose a method to produce, manipulate, and measure two-dimensional cluster states in a single spatial mode by exploiting the intrinsic time-frequency selectivity of Raman quantum memories. Time-frequency encoding enables the scheme to be extremely compact, requiring a number of memories that are a linear function of only the number of different frequencies in which the computational state is encoded, independent of its temporal duration. We therefore show that quantum memories can be a powerful component for scalable photonic quantum information processing architectures.
我们开发了一种使用量子存储器进行时频编码的连续变量簇态量子计算方案。具体而言，我们提出了一种方法，通过利用拉曼量子存储器的固有时间频率选择性，在单个空间模式中产生、操纵和测量二维簇态。时频编码使该方案极其紧凑，所需的存储器数量仅是计算状态所编码的不同频率数量的线性函数，与计算状态的持续时间无关。因此，我们表明量子存储器可以成为可扩展光子量子信息处理架构的强大组件。
