quantum-dot cellular automata

1 definition found

quantum-dot cellular automata - Free On-line Dictionary of Computing (26 May 2007) :

  Quantum-dot Cellular Automata
  QCA
  
     <electronics, computing> (QCA) Quantum logic circuits created
     by orientating pairs of quantum cells so that their relative
     positions determine their affect on each other.  This is
     functionally analogous but structurally different from how
     individual gates in integrated circuits are combined to
     create logical and memory circuitry.
  
     The advantages of quantum-dot cellular automata over
     conventional circuitry are extremely small size/high density,
     low power requirements, and potentially high processing
     speeds.  Disadvantages (in 2000) are difficulty of fabrication
     and low yield.
  
     See also: quantum cell wire.
  
     (http://nd.edu/~qcahome/).
  
     (http://mitre.org/research/nanotech/quantum_dot_cell.html).
  
     ["Quantum Dot Heterostructures", D. Bimberg, et al, John Wiley
     & Sons Ltd., Dec 1998].
  
     (2001-07-17)