论文标题
非线性进料启用量子计算
Nonlinear feedforward enabling quantum computation
论文作者
论文摘要
通过光学时域多路复用基于测量的量子计算是一种从可扩展性的角度实现量子计算机的有前途方法。通过准备适当的资源量子状态和基于测量结果更改的电源馈电源，可实现的容错和普遍性也可以实现。尽管已实现了线性馈电并成为一种常见的实验技术，但直到现在，非线性进料仍未实现。在本文中，我们证明了快速，灵活的非线性进料实现了容忍和通用量子计算所需的基本测量。使用非高斯辅助状态，我们观察到10 $ \％$减少了相对于经典真空杂质的测量过量噪声。
Measurement-based quantum computation with optical time-domain multiplexing is a promising method to realize a quantum computer from the viewpoint of scalability. Fault tolerance and universality are also realizable by preparing appropriate resource quantum states and electro-optical feedforward that is altered based on measurement results. While a linear feedforward has been realized and become a common experimental technique, nonlinear feedforward was unrealized until now. In this paper, we demonstrate that a fast and flexible nonlinear feedforward realizes the essential measurement required for fault-tolerant and universal quantum computation. Using non-Gaussian ancillary states we observed 10$\%$ reduction of the measurement excess noise relative to classical vacuum ancilla.
