标题： 中性原子量子计算机上 Lipkin-Meshkov-Glick 模型的变分模拟 显示英文标题

标题： Variational simulation of the Lipkin-Meshkov-Glick model on a neutral atom quantum computer

摘要： 我们使用中性原子量子计算机上的变分量子本征求解器（VQE）算法来模拟利普金-梅斯科夫-格利克（LMG）模型。我们测试了最多15个自旋的自旋系统的基态能量。使用了两种不同的编码方案：一种是单独自旋编码，其中每个自旋由一个量子比特表示；另一种是高效的格雷码编码方案，该方案只需要与自旋数量的对数成比例的量子比特数量。这种更高效的编码结合零噪声外推技术，被证明可以提高模拟能量相对于精确解的保真度。 显示英文摘要

摘要： We simulate the Lipkin-Meshkov-Glick (LMG) model using the Variational-Quantum-Eigensolver (VQE) algorithm on a neutral atom quantum computer. We test the ground-state energy of spin systems with up to 15 spins. Two different encoding schemes are used: an individual spin encoding where each spin is represented by one qubit, and an efficient Gray code encoding scheme which only requires a number of qubits that scales with the logarithm of the number of spins. This more efficient encoding, together with zero noise extrapolation techniques, is shown to improve the fidelity of the simulated energies with respect to exact solutions.