IBM Research Europe boosts analog PCM density via vector superposition

Researchers at IBM Research Europe published a paper on analog phase-change memory that stores multiple AI vectors in superposition, raising effective storage density with a tunable accuracy tradeoff. Prototype PCM hardware showed inference accuracy close to full-precision software.

• Architecture stores multiple vectors in a single PCM cell
• Density rises via a tunable accuracy tradeoff
• Prototype inference accuracy nears full precision
• Paper published on arXiv (2610.26118)