A C-NOT logic gate requires two input photons. So the circuit works by zapping the quantum dot twice, generating two photons. These are identical because they’ve come from the same dot.

The problem is to implement the contents of the block box with only two inverting NOT gates, along with as many AND and OR gates as we care to use. A rather novel solution In Part 1 of this column, we ...

To gate an integral clock pulse sequence from a continuous source without distorting pulse duration and number is not a trivial task. In most cases, a simple AND gate will cause problems, see Figure 1 ...

Several studies in the literature have proposed the gate drive circuits with the speed-up capacitors, but adding these capacitors complicates the gate drive circuit, and increases both the drive and ...

This gate-drive transformer (GDT)circuit allows the drive signal to the MOSFET to range from 50% down to 0%, while still offering a fast turn-off that cannot be accomplished with a simple load ...

Synthetic biology researchers have demonstrated a new method for digital information processing in living cells, analogous to the logic gates used in electric circuits. The circuits are the ...

Digital design with combinatorial gates like AND, OR, and NOT gates is relatively straightforward. In particular, when you use these gates to form combinatorial logic, the outputs only depend on th… ...