Probing higher-order band topology via spin texture measurements:quantum simulation

• 作者: Linhu Li Jiangbin Gong
• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2021,（18）
• 所属期刊栏目: NEWS & VIEWS
• 页码范围: 1817-1818
• 页数: 2页
• 语种: 英文

摘要

The long-term goal of quantum simulation is to assemble at will many-body quantum systems of vast complexity,to discover emerging new physics or obtain important results beyond the computational capability of classical supercomputers.Along this ambitious and game-changing journey,one milestone is to achieve flexible and high-fidelity quantum simulations with a few qubits.Indeed,qubits based on superconducting Josephson junction,Nitrogen vacancy center,and nuclear magnetic resonance system all constitute versatile platforms to showcase conceptual and the-oretical advances with actual physical operations on quantum sys-tems.Remarkably,even a single qubit under experimentally full control can be used to simulate a two-band Hamiltonian in con-densed-matter physics,with the qubit parameters interpreted as functions of synthetic momentum variables [1-5].