Quantum computing for heavy quarkonium spectroscopy
Quantum computing for heavy quarkonium spectroscopy
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DOI：
10.1103/physrevd.107.074012
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发表时间：
2022-02
影响因子：
5
通讯作者：
Daniel Gallimore;J. Liao
中科院分区：
文献类型：
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作者：
Daniel Gallimore;J. Liao
我们报告了量子计算在重夸克氮光谱研究中的应用的首次演示。基于重夸克和反夸克系统的康奈尔势模型，我们展示了如何在 IBM 云量子计算平台上使用 VQE 方法来表述和解决这个哈密顿问题。由全局去极化噪声通道引起的误差通过零噪声外推法进行校正，从而与预期值非常一致。我们还通过相对于基态的正交化将计算扩展到无噪声量子模拟器上的激发态。
We report a first demonstration for the application of quantum computing to heavy quarkonium spectroscopy study. Based on a Cornell-potential model for the heavy quark and antiquark system, we show how this Hamiltonian problem can be formulated and solved with the VQE approach on the IBM cloud quantum computing platform. Errors due to a global depolarizing noise channel are corrected with a zero-noise extrapolation method, resulting in good agreement with the expected value. We also extend the calculation to excited states on a noiseless quantum simulator by orthogonalization with respect to the ground state.