In recent years, the development of quantum computers beyond the capability of classical computers has become a new frontier in science and technology and a key direction to realize quantum supremacy. However, conventional quantum computing has a serious challenge due to quantum decoherence effect and requires a significant amount of error correction in scaling quantum qubits. Therefore, the exploration of fault-tolerant quantum computation using quantum states topologically protected against local environmental perturbations is an important endeavor of both fundamental value and technological significance for realizing large-scale quantum computation.
![](https://scx1.b-cdn.net/csz/news/tmb/2020/discoveryofz.jpg)
Source:
https://phys.org/news/2020-03-discovery-zero-energy-bound-states-one-dimensional.html