The Utility Of Shallow Dynamic Circuits For Long-Range Entanglement On Large-Scale Quantum Devices

A technical paper titled “Efficient Long-Range Entanglement using Dynamic Circuits” was published by researchers at IBM Research, IBM T.J. Watson Research Center, University of Southern California, MIT-IBM Watson AI Lab, and IBM Quantum. Abstract: "Quantum simulation traditionally relies on unitary dynamics, inherently imposing efficiency constraints on the generation of intricate entangl... » read more

HBM-based scalable multi-FPGA emulator for Quantum Fourier Transform (QFT)

New technical paper titled "A Scalable Emulator for Quantum Fourier Transform Using Multiple-FPGAs With High-Bandwidth-Memory" from researchers at Tohoku University in Japan. Abstract: "Quantum computing is regarded as the future of computing that hopefully provides exponentially large processing power compared to the conventional digital computing. However, current quantum computers do not... » read more

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