标题： 研究三味施温格模型在有限化学势下的相图：基于测量和门控的量子计算方法 显示英文标题

标题： Studying the phase diagram of the three-flavor Schwinger model in the presence of a chemical potential with measurement- and gate-based quantum computing

摘要： 我们提出了一种用于变分量子本征值求解器（VQE）的假设量子电路，适用于在化学势存在的情况下探索多味施温格模型的相结构。我们的假设能够通过参数约束来包含相关的模型对称性，并且可以在基于电路和基于测量的量子设备上实现。我们通过VQE的经典模拟显示，我们的假设能够捕捉模型的相结构，并可以高度准确地近似基态。此外，我们在超导门控量子硬件上进行了原理验证模拟。我们的结果显示，我们的方法适合当前的门控量子设备，并且一旦可用即可在基于测量的量子设备上轻松实施。 显示英文摘要

摘要： We propose an ansatz quantum circuit for the variational quantum eigensolver (VQE), suitable for exploring the phase structure of the multi-flavor Schwinger model in the presence of a chemical potential. Our ansatz is capable of incorporating relevant model symmetries via constrains on the parameters, and can be implemented on circuit-based as well as measurement-based quantum devices. We show via classical simulation of the VQE that our ansatz is able to capture the phase structure of the model, and can approximate the ground state to a high level of accuracy. Moreover, we perform proof-of-principle simulations on superconducting, gate-based quantum hardware. Our results show that our approach is suitable for current gate-based quantum devices, and can be readily implemented on measurement-based quantum devices once available.