Characterization of macroscopic quantum behavior using RSFQ circuitry

An integrated circuit has been designed to investigate the quantization of energy levels in an rf SQUID. The experiment is very similar to the rapid-sweep technique of Silvestrini et al. (1997, 1999) except that it is accomplished by using superconducting digital electronic circuitry as the experimental apparatus. This allows the system being studied to be very well isolated from its environment.