Title :
Defect Tolerance of QCA Tiles
Author :
Huang, Jing ; Momenzadeh, Mariam ; Lombardi, Fabrizio
Author_Institution :
Dept of Electr. & Comput. Eng., Northeastern Univ., Boston, MA
Abstract :
Quantum dot cellular automata (QCA) is one of the promising technologies for nanoscale implementation. The operation of QCA systems is based on a new paradigm generally referred to as processing-by-wire (PBW). This paper analyzes the defect tolerance properties of PBW when tiles are employed using molecular QCA cells. Based on a 3 times 3 QCA block, with different input/output arrangements, different tiles are analyzed and simulated using a coherence vector engine. The functional characterization and polarization level of these tiles for undeposited cell defects are reported. It is shown that novel features of PBW are possible due to spatial redundancy and QCA tiles are robust and inherently defect tolerant
Keywords :
cellular automata; fault simulation; fault tolerance; logic testing; quantum computing; quantum dots; QCA systems; QCA tiles; coherence vector engine; defect tolerance properties; molecular QCA cells; nanoscale implementation; quantum dot cellular automata; undeposited cell defects; Analytical models; CMOS technology; Integrated circuit interconnections; Logic devices; Pulse inverters; Quantum cellular automata; Quantum computing; Quantum dots; Redundancy; Tiles; Q C A; defect tolerance; emerging technologies;
Conference_Titel :
Design, Automation and Test in Europe, 2006. DATE '06. Proceedings
Conference_Location :
Munich
Print_ISBN :
3-9810801-1-4
DOI :
10.1109/DATE.2006.244118
