THE blurry realm of quantum memory just got clearer.
Ordinarily, memory cells are accessed one at a time via a “tree” with switches on each branch. A string of bits determines the switch that must be open at each level of branching in order to create a path to the required cell.
Quantum computers use a superposition of all memory cells, which means many switches at the same level must be activated at once. But if the same quantum bit, or “qubit”, activates multiple switches in the same level, they get entangled, ruining the data.
Now researchers at the Scuola…
