论文标题
使用微波电路的连续变量量子计算的通用门设置
Universal Gate Set for Continuous-Variable Quantum Computation with Microwave Circuits
论文作者
论文摘要
我们为使用微波电路的连续变量量子计算提供了通用门集的明确结构。这种通用集已在量子光设置中首先提出，但是由于工程强大的非线性困难，其实验实现在该领域仍然难以捉摸。在这里，我们表明，基于蜗牛[Frattini等，Appl。物理。 Lett。 110，222603（2017）]使我们能够克服这一困难。作为一个应用程序，我们表明该体系结构允许通过实验可行的程序生成立方相状态。这项工作强调了微波电路在光学系统方面的实际优势，以设计非高斯州，并基于连续变量可兑换的通用集合的基本门的重复，对连续变量的算法打开了寻求连续变量的算法。
We provide an explicit construction of a universal gate set for continuous-variable quantum computation with microwave circuits. Such a universal set has been first proposed in quantum-optical setups, but its experimental implementation has remained elusive in that domain due to the difficulties in engineering strong nonlinearities. Here, we show that a realistic three-wave mixing microwave architecture based on the SNAIL [Frattini et al., Appl. Phys. Lett. 110, 222603 (2017)] allows us to overcome this difficulty. As an application, we show that this architecture allows for the generation of a cubic phase state with an experimentally feasible procedure. This work highlights a practical advantage of microwave circuits with respect to optical systems for the purpose of engineering non-Gaussian states, and opens the quest for continuous-variable algorithms based on few repetitions of elementary gates from the continuous-variable universal set.
