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| Title: | 於近期量子計算機量測糾結熵
Probing Entanglement Entropy on Near-term Quantum Computers |
| Authors: | 張淮竣
Chang, Huai-Chun |
| Contributors: | 許琇娟
Hsu, Hsiu-Chuan
張淮竣
Chang, Huai-Chun |
| Keywords: | 嘈雜中等規模量子機器
IBM Quantum
淬火動力學
Su–Schrieffer–Heeger 模型
任尼熵
隨機測量
錯誤緩解
Noisy Intermediate-Scale Quantum Device
IBM Quantum
Quench dynamics
Su–Schrieffer–Heeger model
Renyi entropy
Randomized measurement
Error mitigation |
| Date: | 2024 |
| Issue Date: | 2024-09-04 15:26:35 (UTC+8) |
| Abstract: | 在本篇論文中，我們在嘈雜中等規模量子機器（Noisy Intermediate-Scale Quantum Device， 簡稱NISQ 機器） 上模擬了Su–Schrieffer–Heeger 模型。主要運用了IBM Quantum 上所提供的量子電腦，透過隨機測量進行第二任尼熵（second-order Renyi entropy）的量測。為了在NISQ 機器上處理部分二聚化淬火哈密頓量，我們應用了適應性時間步長的Trotter decomposition 以減少電路深度。同時我們也考慮了完全二聚化極限淬火哈密頓量，其中時間演化算子可以精確地映射到量子閘，因此降低了嘈雜的影響。在錯誤緩解之後，糾纏熵的振盪模式與理論很好地吻合。為了有效地處理隨機測量所需的大量量子電路板和數據，我們開發了一個名為Qurry 的Python 套件工具，用於處理前述實驗的工作流程的管理、自動化、以及運用平行化計算進行後處理。最後我們還研究了隨機量測任尼熵的誤差標度分析，及其在模擬更大系統時會面臨的挑戰。
In this thesis, we explore the quench dynamics of the Su–Schrieffer–Heeger (SSH) model and quantum entanglement using Noisy Intermediate-Scale Quantum (NISQ) computers, specifically on the IBM Quantum platform. We investigate the second-order Renyi entropy through randomized measurements to characterize the entanglement of quantum states. To simulate partial-dimerized quench Hamiltonians, we employ Trotter decomposition with an adaptive step size to reduce circuit depth. In the fully dimerized limit, the time evolution operator is exactly mapped to quantum gates, which minimizes noise. After applying error mitigation techniques, we find that the entanglement entropy oscillations align with theoretical predictions. Additionally, we developed a Python package called Qurry to manage workflows and facilitate parallel post-processing. Finally, we analyze the error scaling of Renyi entropy measurements and discuss the challenges encountered when simulating larger systems. |
| Reference: | [1] Tiff Brydges, Andreas Elben, Petar Jurcevic, Benoît Vermersch, Christine Maier, Ben P. Lanyon, Peter Zoller, Rainer Blatt, and Christian F. Roos. Probing rényi entanglement entropy via randomized measurements. Science, 364(6437):260–263, 2019.
[2] Huai-Chun Chang. Qurry - the quantum experiment manager for qiskit, 2024.
[3] Huai-Chun Chang, Hsiu-Chuan Hsu, and Yu-Cheng Lin. Probing entanglement dy- namics and topological transitions on noisy intermediate-scale quantum computers, 2024.
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[17] Vovrosh,Joseph,Khosla,KiranE.,Greenaway,Sean,Self,Christopher,Kim,M.S., Knolle, and Johannes. Simple mitigation of global depolarizing errors in quantum simulations. Phys. Rev. E, 104:035309, Sep 2021. |
| Description: | 碩士
國立政治大學
應用物理研究所
111755001 |
| Source URI: | http://thesis.lib.nccu.edu.tw/record/#G0111755001 |
| Data Type: | thesis |
| Appears in Collections: | [應用物理研究所 ] 學位論文
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