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arXiv 2601.04092quant-phhep-lathep-phnucl-th
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量子力学中的散射相位移在量子计算机上的实现

Scattering phase shift in quantum mechanics on quantum computers

College of Arts and Sciences, Dakota State University(达科他州立大学文理学院);Department of Physics, The George Washington University(乔治华盛顿大学物理系);Physics Division, Argonne National Laboratory(阿贡国家实验室物理部)

Peng Guo, Paul LeVan, Frank X. Lee, Yong Zhao

AI总结:

该研究在量子计算机上实现了单维量子力学模型中无限体积散射相位移的提取,通过设计量子电路并采用后处理方法,验证了在两个量子比特时的有效性,但在三个量子比特时因误差导致失败。

摘要:

我们研究了在简单的单维量子力学模型中,利用在Ref.~\cite{Guo:2023ecc}中建立的正式ism,将受限系统的积分相关函数(ICF)与无限体积散射相位移通过加权积分联系起来,在量子计算机上提取无限体积散射相位移的可行性。系统首先在有限的盒中离散化,并采用周期性边界条件。通过使用具有精确解的接触相互作用势,验证了实时中的正式ism。然后设计并构建了量子电路以在当前的量子计算架构上实现该正式ism。为克服实时模拟中积分相关函数的快速振荡行为,提出了不同的数据后处理方法并进行了讨论。在IBM硬件上的测试结果表明,使用两个量子比特可以取得良好的一致性,但使用三个量子比特时由于两个量子比特门操作误差和热弛豫误差导致完全失败。

英文摘要:

We investigate the feasibility of extracting infinite volume scattering phase shift on quantum computers in a simple one-dimensional quantum mechanical model, using the formalism established in Ref.~\cite{Guo:2023ecc} that relates the integrated correlation functions (ICF) for a trapped system to the infinite volume scattering phase shifts through a weighted integral. The system is first discretized in a finite box with periodic boundary conditions, and the formalism in real time is verified by employing a contact interaction potential with exact solutions. Quantum circuits are then designed and constructed to implement the formalism on current quantum computing architectures. To overcome the fast oscillatory behavior of the integrated correlation functions in real-time simulation, different methods of post-data analysis are proposed and discussed. Test results on IBM hardware show that good agreement can be achieved with two qubits, but complete failure ensues with three qubits due to two-qubit gate operation errors and thermal relaxation errors.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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