Do Superconducting Processors Really Need Cryogenic Memories? The Case For Cold DRAM


Cryogenic, superconducting digital processors offer the promise of greatly reduced operating power for server-class computing systems. This is due to the exceptionally low energy per operation of Single Flux Quantum circuits built from Josephson junction devices operating at the temperature of 4 Kelvin. Unfortunately, no suitable same-temperature memory technology yet exists to complement thes... » read more

What’s Next For AI, Quantum Chips


Semiconductor Engineering sat down to discuss the latest R&D trends with Luc Van den hove, president and chief executive of Imec; Emmanuel Sabonnadière, chief executive of Leti; and An Chen, executive director for the Nanoelectronics Research Initiative at the Semiconductor Research Corp. (SRC). Chen is on assignment from IBM. What follows are excerpts of those conversations, which took pl... » read more

System Bits: Dec. 20


Removing quasiparticles from superconducting quantum circuits improves lifetime Given that an important prerequisite for the realization of high-performance quantum computers is that the stored data should remain intact for as long as possible, an international team of scientists at European interdisciplinary research institute Forschungszentrum Jülich has succeeded in making further improvem... » read more