Researchers in China have built a quantum computer block that can resist disturbances using their advanced quantum processor, Zuchongzhi 2.

Quantum computers are extremely sensitive—even tiny vibrations or noise can ruin their calculations. A quantum block that resists disturbances is a special setup of qubits (the building blocks of quantum information) designed to keep data safe even when there’s some interference.

The team used a concept called higher-order topological phases to create “corner modes”—small, protected quantum states that are much more robust than regular qubits. They also tested non-equilibrium topological phases, which you can think of as a shifting fortress that still keeps its treasures safe, on a 6×6 qubit grid to confirm these protected states actually worked.

While not perfect, this method shows that topology can naturally protect quantum information, pointing the way toward more reliable quantum memory and logic units.

This is the first time anyone has demonstrated non-equilibrium higher-order topological phases on a programmable quantum processor, showing that even today’s imperfect quantum machines can explore exotic states of matter.

Challenges remain, like scaling the system beyond 6×6 qubits and testing how well it holds up in the real world. Success here could eventually enable large-scale quantum computing, advanced simulations, and breakthroughs in AI research.