Quantum Technology for Comparator Circuit

Hafiz Hasan Babu1, Khandaker Mohi Uddin2, Rownak Himel3, Nitish Biswas2
1University of Dhaka, 2Dhaka International University, 3Dhaka International University


Quantum computing is the fusion of quantum physics and theoretical computer science that makes it more special and super faster than other traditional silicon-based computing systems. In this paper, we have designed quantum 2-qubit string, 4-qubit string, and n-qubit string comparators using the basic quantum operations such as AND, OR, NOT, and XOR that are based on quantum gates CNOT, V, and V+. The proposed quantum comparators take the advantage of basic quantum computing to perform parallel processing and super-fast calculations. This quantum technology is useful for cybersecurity, drug development, financial modeling, traffic optimization, weather f