New Design for Quantum Dots Cellular Automata to obtain Fault Tolerant Logic Gates
Purchase on Springer.com
$39.95 / €34.95 / £29.95*
Rent the article at a discountRent now
* Final gross prices may vary according to local VAT.
In this paper, we analyze fault tolerance properties of the Majority Gate, as the main logic gate for implementation with Quantum dots Cellular Automata (QCA), in terms of fabrication defect. Our results demonstrate the poor fault tolerance properties of the conventional design of Majority Gate and thus the difficulty in its practical application. We propose a new approach to the design of QCA-based Majority Gate by considering two-dimensional arrays of QCA cells rather than a single cell for the design of such a gate. We analyze fault tolerance properties of such Block Majority Gates in terms of inputs misalignment and irregularity and defect (missing cells) in assembly of the array. We present simulation results based on semiconductor implementation of QCA with an intermediate dimensional dot of about 5 nm in size as opposed to magnetic dots of greater than 100 nm or molecular dots of 2–5Å. Our results clearly demonstrate the superior fault tolerance properties of the Block Majority Gate and its greater potential for a practical realization. We also show the possibility of designing fault tolerant QCA circuits by using Block Majority Gates.
- Amlani, I., A.O. Orlov, G.H. Bernstein, C.S. Lent & G.L. Snider, 1997. Realization of a functional cell for quantum-dot cellular automata. Science 277, 289.
- Amlani, I., A.O. Orlov, G. Toth, C.S. Lent, G.H. Bernstein & G.L. Snider, 1999. Digital logic gate using quantum-dot cellular automata. Applied Physics Lett.74, 2875.
- Ashoori, R.C., H.L. Stormer, J.S. Weiner, L.N. Pfeiffer, K.W. Baldwin & W.West, 1993. N-electron ground state energies of a quantum dot in a magnetic field. Phys. Rev. Lett. 71, 613.
- Cowburn, R. P. & M. E. Welland, 2000. Room temperature magnetic quantum cellular automata. Science 287, 1466.
- Fijany, A., B.N. Toomarian & M. Spotnitz, 1999. Novel highly parallel architectures using quantum dot-based hardware. Proc. Parallel Computing 99 (PARCO 99), Delft, The Netherland.
- Fijany, A., B.N. Toomarian, K. Modarress & M. Spotnitz, 2001. Quantum dots-based hardware architecture for implementation of a bit-serial adder. To appear in NASA J. Tech Brief.
- Fijany, A., B.N. Toomarian & K. Modarress, 2001. Quantum dots cellular automata fault tolerant logic gates: block gates with imprecise assembly. To appear in NASA J. Tech Brief.
- Gin, A., S. Williams, H. Meng & P.D. Tougaw, 1999. Hierarchical design of quantum-dot cellular automata devices. J. Applied Physics 85, 3713.
- Kogge, P., 1999. Personal Communications.
- Lent, C.S. & P.D. Tougaw, 1993. Line of interacting quantum-dot cells: a binary wire. J. Applied Physics. 74, 6227.
- Lent, C.S., P.D. Tougaw & W. Prod, 1994. Quantum cellular automata: The physics of computing with quantum dot molecules. PhysComp 94: Proc.Workshop Phys. Comp., IEEE Computer Society Press.
- Lent, C.S. & P.D. Tougaw, 1997. A device architecture for computing with quantum dots. Proc. IEEE 85(4), 541.
- Meurer, B., D. Heitmann & Ploog, K., 1992. Single electron charging of quantum-dot atoms. Phys. Rev. Lett. 68, 1371.
- Orlov, A.O., I. Amlani, G. Toth, C.S. Lent, G.H. Bernstein & G.L. Snider, 1997. Experimental demonstration of a binary wire for quantum-dot cellular automata. Applied Physics Lett. 74, 928.
- Smith, C.G., 1999. Computation without current. Science 284, 274.
- Tougaw, P.D. & C.S. Lent. 1994. Logical device implementation using quantum cellular automata. J. Applied Physics, 75, 1818.
- New Design for Quantum Dots Cellular Automata to obtain Fault Tolerant Logic Gates
Journal of Nanoparticle Research
Volume 3, Issue 1 , pp 27-37
- Cover Date
- Print ISSN
- Online ISSN
- Kluwer Academic Publishers
- Additional Links
- Quantum dots based computing
- Quantum dots Cellular Automata
- quantum dots logic gates
- fault tolerant logic gates
- Majority Gate
- Industry Sectors