The DIGITHEL2 experiment is dedicated to the design of high-speed ultra low-power digital gates with superconducting technologies and is conducted by INFN Roma Tor Vergata and the University of Roma Tor Vergata Physics Detartment in close collaboration with Hypres inc.
Two different kinds of technologies are studied: the Energy-efficient Rapid Single Flux Quantum (ERSFQ) and the negative-inductance SQUID (nSQUID). A series of toggle Flip Flops in ERSFQ technology, a NOT gate and a shift register in nSQUID technology were designed and successfully tested.
The final goal of the DIGITHEL2 experiment is the design of a 4 bit Arithmetic Logic Unit in nSQUID technology.