Principles of a cryogenic memory cell design using small arrays of coupled Josephson junctions*

We present a cryogenic memory cell design paradigm that is based on the dynamics of small coupled array of Josephson junctions [1, 2]. All the basic memory operations (e.g., Write, Read, and Reset) are implemented on the same circuit and different junctions in the array can in principle be utilized for these operations. The presented memory operation paradigm is fundamentally different from conventional single quantum flux operation logics (SFQ). We have calculated memory cell access times and access energies that are in the ranges of tens of ps for access times and 10^-18-10^-19 J for access energies. As an example, we will discuss memory cell operation driven by a SFQ pulse employing an inductively coupled array of three Josephson junctions.
Y. Braiman, N. Nair, J. Rezac, and N. Imam, Supercond. Sci. and Technol. 129, 124003 (2016).
Y. Braiman, B. Neschke, N. Nair, N. Imam, and R. Glowinski, Phys. Rev. E 94, 052223 (2016).