Pengfei Zhang

Physicists ran two programs on a superconducting chip: an orderly one and a chaotic one. By measuring the distances between energy levels, they found that in chaos, these levels keep a respectful distance, like people in a crowded room forming a circle. On a graph, this looks like a 'donut'—an empty

Scientists applied a hybrid quantum algorithm to the Ising model—a problem of finding the most stable state of many interacting parts. A processor of 104 superconducting qubits found configurations with lower energy than the classical annealing method. Calculations show that with 100 qubits, a quant