论文标题
用高效编码和ANSATZ方案对费米子哈密顿量的量子模拟
Quantum simulations of Fermionic Hamiltonians with efficient encoding and ansatz schemes
论文作者
论文摘要
我们提出了一种计算方案，用于在量子计算机上对费米管汉密尔顿人进行量子模拟，从而实现了以前在常规编码和变异量子eigensolvers（VQE）的ansatses中不可行的计算。我们将Qubit效率的编码方案映射Slater确定因素映射到Qubits上，并使用修改后的量子耦合群集ANSATZ和降噪技术。我们的策略导致电路栅极计数的缩放缩放和所需变分参数数量的减少，从而提高了对噪声的弹性。我们提出了量子技术感兴趣的自旋缺陷的结果，超出了钻石中带负电荷的氮空位中心的最低模型，以及4H碳化硅（4H-SIC）的双重空缺，并在第一次使用4H-SIC的硅硅空缺中的硅硅（4H-SIC）和造成负电荷的硅空缺。
We propose a computational protocol for quantum simulations of Fermionic Hamiltonians on a quantum computer, enabling calculations which were previously not feasible with conventional encoding and ansatses of variational quantum eigensolvers (VQE). We combine a qubit-efficient encoding scheme mapping Slater determinants onto qubits with a modified qubit-coupled cluster ansatz and noise-mitigation techniques. Our strategy leads to a substantial improvement in the scaling of circuit gate counts and to a decrease in the number of required variational parameters, thus increasing the resilience to noise. We present results for spin defects of interest for quantum technologies, going beyond minimum models for the negatively charged nitrogen vacancy center in diamond and the double vacancy in 4H silicon carbide (4H-SiC) and tackling a defect as complex as negatively charged silicon vacancy in 4H-SiC for the first time.
