  Superconducting circuits based on quantum phase-slip junctions (QPSJs) can
conduct quantized charge pulses, which naturally resemble action potentials
generated by biological neurons. A corresponding synaptic circuit, which works
as a weighted connection between two neurons, can also be realized by circuits
comprised of QPSJs and magnetic Josephson junctions (MJJs) as a means of charge
modulation for quantized charge propagation. In this paper, we present basic
neuromorphic components such as neuron and synaptic circuits based on
superconducting QPSJs and MJJs. Using a SPICE model developed for QPSJs, neuron
and synaptic circuits have been simulated in WRSPICE to demonstrate possible
operation. We provide estimates for QPSJ energy dissipation and operation speed
based on calculations using simple models. The challenges for implementation of
this technology are also briefly discussed.
