Latching onto Cellular Automata
Science · 2001
In devices known as quantum-dot cellular automata (QCA), the logic levels are represented by the spatial configuration of electrons, and coding of information in the device is controlled and manipulated by the position of a single electron. A clocked cell modulates the barrier between two quantum dots and allows the charge of the electron to be stored, or latched, into position, and thus provides a signal for the next cycle.