2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/92697We show that phase memory can be much longer than energy relaxation in systems with exponentially large dimensions of Hilbert space; this finding is documented by fifty years of nuclear experiments, though the information is somewhat hidden. For quantum computers Hilbert spaces of dimension $2^{100}$ or larger will be typical and therefore this effect may contribute significantly to reduce the problems of scaling of quantum computers to a useful number of qubits.11 pages, 3 postscript figures (low resolution). Uses scicite.sty which is includedQuantum PhysicsNuclear ExperimentNuclear Theorytext