Researchers at the Duke Quantum Center used a 13-ion quantum simulator to recreate string breaking, a process in which energy stored in a stretched connection between particles becomes large enough to spawn new particle pairs. The experiment, published in Nature Physics, is one of the earliest demonstrations of this particle-forming dynamic on a quantum platform.
The team encoded a string-breaking model into a chain of trapped ions and used laser beams to control their interactions, effectively mimicking the stretching and breaking of a particle-like string. They then tracked the system's evolution and detected the appearance of effective charges. Classical computer simulations of the same process agreed with the quantum results, though the authors expect quantum machines to outpace classical ones as these experiments grow in scale.
The work is part of a broader push: separate teams using Google's superconducting circuits and QuEra's neutral-atom systems have recently reproduced similar string-breaking physics. Each hardware approach has its own strengths, and together they offer complementary tools for probing fundamental questions about matter formation in the early universe.