Energy-efficient superconducting microprocessor

By: anon (, January 13, 2021 11:35 pm
Room: Moderated Discussions
"2.5 GHz superconducting prototype uses 80 times less energy than its semiconductor counterpart, even accounting for cooling":

And the paper:

"We conducted the first successful demonstration of an adiabatic microprocessor based on unshunted Josephson junction (JJ) devices manufactured using a Nb/AlOLₓ/Nb superconductor IC fabrication process. It is a hybrid of RISC and dataflow architectures operating on 4-b data words. We demonstrate register file R/W access, ALU execution, hardware stalling, and program branching performed at 100 kHz under the cryogenic temperature of 4.2 K. We also successfully demonstrated a high-speed breakout chip of the microprocessor execution units up to 2.5 GHz. We use a logic primitive called the adiabatic quantum-flux-parametron (AQFP), which has a switching energy of 1.4 zJ per JJ when driven by a four-phase 5-GHz sinusoidal ac-clock at 4.2 K. These demonstrations show that AQFP logic is capable of both processing and memory operations and that we have a path toward practical adiabatic computing operating at high-clock rates while dissipating very little energy."
TopicPosted ByDate
Energy-efficient superconducting microprocessoranon2021/01/13 11:35 PM
Reply to this Topic
Body: No Text
How do you spell avocado?