طراحي رأي‌ دهنده اكثريت N ماژولار با استفاده از گيت‌هاي برگشت‌پذير كوانتومي

With the advancement of technology, critical an‎d safety systems require uninterrupted an‎d error-free operation. Since it is not possible to completely eliminate errors in electrical circuits, the redundancy approach is essential to reduce the error rate an‎d create fault-tolerant circuits. In this study, N modular redundancy with an odd number of modules has been used. For the circuit design, reversible gates were used, which have lower power consumption than irreversible circuits an‎d provide information recovery due to the one-to-one mapping between input an‎d output. Logic synthesis in reversible circuits is more complicated due to the lack of feedback an‎d branching, but these circuits play an important role in overcoming physical limitations an‎d temperature an‎d density challenges. In this study, two five-modular reversible majority voting circuits using the divide-an‎d-conquer method are proposed. The first design showed relative improvement in quantum cost an‎d critical path delay compared to some similar methods. The second scheme reduced the quantum cost, critical path delay, an‎d number of binary qubits compared to all previous works, but the circuit depth an‎d number of auxiliary inputs an‎d garbage outputs increased by one unit. Both schemes were made fault-tolerant by the parity-preserving method. Next, a seven-modular reversible majority voting circuit was proposed, which had a significant reduction in quantum cost relative to the number of inputs with a fault tolerance of 56.76 percent. These findings can be effective in designing high-performance quantum systems. RC Viewer software was used to simulate an‎d eva‎luate the results, an‎d criteria such as quantum cost, number of binary qubits, number of gates used in the circuits, an‎d truth table were extracted through it.

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