论文标题
具有非高斯输入状态的高斯量子电路的经典模拟
Classical simulation of Gaussian quantum circuits with non-Gaussian input states
论文作者
论文摘要
我们认为高斯量子回路补充了非高斯输入状态，并得出了足够的条件，以有效地对这些电路进行强有力的强仿真。特别是，我们将连续可变量子状态的恒星表示为多模设置，并将输入非高斯状态的出色等级（最近引入的非高斯性衡量标准）与经典评估这些电路的输出概率密度的成本相关联。我们的结果对大型近期连续变量量子电路的强大模拟性产生了影响。
We consider Gaussian quantum circuits supplemented with non-Gaussian input states and derive sufficient conditions for efficient classical strong simulation of these circuits. In particular, we generalise the stellar representation of continuous-variable quantum states to the multimode setting and relate the stellar rank of the input non-Gaussian states, a recently introduced measure of non-Gaussianity, to the cost of evaluating classically the output probability densities of these circuits. Our results have consequences for the strong simulability of a large class of near-term continuous-variable quantum circuits.
