Reversible conveyer computation in array of parametric quantrons

A possibility of physically and logically reversible processing of digital information in Josephson-junction circuits of a reasonable complexity has been considered. As an example, an 8-bit 1024-point fast convolver has been designed on the basis of a two-dimensional quasiuniform array of about 250 x 30,000 parametric quantrons. This completely reversible conveyor device can operate with the estimated rate of at least 10 to the 9th numbers per second, which corresponds to 10 to the 14th binary logical operations per second. At this rate the power dissipation in the whole device can still be as low as 30 nW. A new mode of the parametric quantron operation with large parameter margins is also described.