在声学超材料中观察D类拓
Shi-Qiao Wu1, Wenting Cheng2, Xiao-Yu Liu3
1School of Physical Science and Technology & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China; School of Physics and Optoelectronic Engineering, Foshan University, Foshan 528000, China; Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic Technology, Foshan University, Foshan 528000, China.
Science bulletin
|February 10, 2024
概括
研究人员设计了声学超材料来实现二维拓D类相 (TDPs). 这一突破实验性地证明了类似Majorana的边缘模式,为拓量子计算和语音信息处理铺平了道路.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 拓学材料 拓学材料
- 声学元材料是一种声学元材料.
背景情况:
- 拓材料和超材料为设计物质异常阶段提供了新的方法.
- 拓D类相 (TDPs) 对于实现二维的Majorana基本粒子至关重要.
- 实验实现二维TDP仍然是一个重大挑战.
研究的目的:
- 在一个声学晶体中实验实现二维拓D类相 (TDPs).
- 在一个被动的元材料中展示粒子洞和费米子类的时间逆转对称的合成.
- 提供D和DIII类拓及其相关边缘模式的直接证据.
主要方法:
- 开发了一种新的设计方案,使用了具有实值合的丰富单元细胞结构.
- 该设计模拟了TDP的目标哈密尔顿式,克服了复杂跳跃的挑战.
- 在声学晶体上进行了实验,以验证理论设计.
主要成果:
- 在两个独立的部门成功实现了一对具有相反的切尔恩数的TDP.
- 在声学系统中合成了一种内在的费米子类的时间逆转对称性.
- 测量了类似Majorana的声学螺旋边缘模式,证明了强大的拓运输.
结论:
- 这项研究为实验实现基本拓阶段 (D和DIII类) 提供了一条新的途径.
- 这些发现为拓量子计算和语音信息处理的进步提供了潜力.
- 开发的技术可以使用被动元材料实现所有拓类.
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