Multi-terminal cross-point synaptic device using nanocrystal dot structures

A system comprising:

• a controller;
• and
• a crossbar array coupled with the controller, the crossbar array configured to operate as a neural network, the crossbar array comprising:
• a cross-point synaptic device at each of a plurality of crosspoints, the cross-point synaptic device comprising:
• a weight storage element comprising a set of nanocrystal dots;
• and
• at least three terminals for interacting with the weight storage element, wherein a weight is stored in the weight storage element by sending a first electric pulse via a gate terminal from the at least three terminals, the first electric pulse causes the nanocrystal dots to store a corresponding charge, and the weight is erased from the weight storage element by sending a second electric pulse via the gate terminal, the second electric pulse having an opposite polarity of the first electric pulse.