摘要
The behavior of quantum cellular automata （QCA） under the influence of a stray charge is quantified. A new time-independent switching paradigm, a probability model of the double-dot system, is developed. Superiority in releasing the calculation operation is presented by the probability model compared to previous stray charge analysis utilizing ICHA or full-basis calculation. Simulation results illustrate that there is a 186-nm-wide region surrounding a QCA wire where a stray charge will cause the target cell to switch unsuccessfully. The failure is exhibited by two new states＇ dominating the target cell. Therefore, a bistable saturation model is no longer applicable for stray charge analysis.
The behavior of quantum cellular automata （QCA） under the influence of a stray charge is quantified. A new time-independent switching paradigm, a probability model of the double-dot system, is developed. Superiority in releasing the calculation operation is presented by the probability model compared to previous stray charge analysis utilizing ICHA or full-basis calculation. Simulation results illustrate that there is a 186-nm-wide region surrounding a QCA wire where a stray charge will cause the target cell to switch unsuccessfully. The failure is exhibited by two new states＇ dominating the target cell. Therefore, a bistable saturation model is no longer applicable for stray charge analysis.
基金
supported by the National Natural Science Foundation of China(No.61172043)
the Key Program of Shaanxi Provincial Natural Science for Basic Research(No.2011JZ015)
