Quantum Sampling Reaches a Nucleus Beyond a 768-GB Node's Memory

An IIT Roorkee team produced an unconverged approximate ground-state energy for the exotic nucleus magnesium-32 by sampling configurations from IBM quantum processors after their 768-gigabyte supercomputer node ran out of memory, the first use of sample-based quantum diagonalization on the nuclear shell model. A close look at why nuclear structure is a defense workload, how it feeds stockpile stewardship simulation and evaluated nuclear data, and the accuracy gap still separating a rented quantum sampler from a production weapons code.