4.6 A 144Kb Annealing System Composed of 9× 16Kb Annealing Processor Chips with Scalable Chip-to-Chip Connections for Large-Scale Combinatorial Optimization Problems. - Takashi Takemoto; Kasho Yamamoto; Chihiro Yoshimura; Masato Hayashi; Masafumi Tada; Hiroaki Saito; Mayumi Mashimo; Masanao Yamaoka (ISSCC, 2021)