论文标题
量子模拟采用连接力矩扩展
Quantum simulations employing connected moments expansions
论文作者
论文摘要
量子计算（QC）的进一步进步取决于启用多体模型，这些模型避免了深层电路和过度使用CNOT大门。为此，我们采用有限订单连接的力矩扩展（CMX）和负担得起的程序进行初始状态准备的方法开发了一种质量控制方法。我们通过H2分子势能表面上的经典仿真和具有广泛相关强度范围的Anderson模型，使用CMX的几种量子变异来证明我们的方法的性能。结果表明我们的方法是强大而灵活的。即使在解离和强相关限制下，也可以维持与精确解决方案的良好协议。
Further advancement of quantum computing (QC) is contingent on enabling many-body models that avoid deep circuits and excessive use of CNOT gates. To this end, we develop a QC approach employing finite-order connected moment expansions (CMX) and affordable procedures for initial state preparation. We demonstrate the performance of our approach employing several quantum variants of CMX through the classical emulations on the H2 molecule potential energy surface and the Anderson model with a broad range of correlation strength. The results show that our approach is robust and flexible. Good agreements with exact solutions can be maintained even at the dissociation and strong correlation limits.
