Design of Reversible Code Converters for Quantum Computer based Systems

Mojtaba Noorallahzadeh, Mohammad Mosleh

As an interesting and significant research domain, reversible logic is massively utilized in technologies, including optical computing, cryptography, quantum computing, nanotechnology, and so on. The realization of quantum computing is not possible without the implementation of reversible logic, and reversible designs are presented mainly to minimize the thermal loss because of the data input bits lost in the irreversible circuit. Digital converters, as the most important logic circuits, are used to connect computing systems with different binary codes. This paper first proposes a new reversible gate called Reversible Noorallahzadeh[Formula: see text]Mosleh Gate (RNMG). Then, using the proposed RNMG gate as well as existing NMG1, NMG6, and PG gates, three different designs of reversible Binary-Coded Decimal (BCD) to EX-3 code converter are proposed. Our results indicate that the proposed BCD to EX-3 code converters are superior to previous designs in terms of quantum cost. Moreover, the proposed converters are comparable or better than previous designs in terms of gate count, constant inputs, and garbage outputs.

Pavel Bažant

Heranmoy Maity, Gopal Kumar Gupta, Bidrohi Bhattacharjee +3 more

Quantum computing is an extremely promising domain in engineering and technology, primarily because it offers low power consumption and high-speed operation. In this article, the authors proposed the new reversible 7’s and 8’s complement code converter (C-CC) using reversible NOT and Peres gate (PG). The reversible 7’s C-CC designed using only three reversible NOT gates. The Quantum cost (QC), Constant Input (CI), garbage output (GO) and Delay are 3, 0, 0 and 1 respectively. The 8’s C-CC can be designed by adding extra ‘1’ with 7’s Complement code. The 8’s C-CC designed using only one PG and four reversible NOT gates. The QC, CI, GO and delay of the proposed 8’s C-CC is 8, 0, 0 and 1 respectively. The proposed work is verified using IBM Qiskit simulator.

Sankalpa Khadka

Rakshith Saligram, T. R. Rakshith

Quantum computing is one of the emerging fields of technology that has been a guiding light for low power VLSI, low power CMOS design, optical information computing, DNAcomputing, Bio-informatics and Nano-technology .A quantum circuit is a model for quantum computation in which a computation is performed by a sequence of quantum gates, which are reversible transformation on a quantum mechanical analog of an n bit register, referred to as an n-qubit.Code converters are required day in and day out.In this paper, a reversible 5421 to binary code converter is implemented.

Markus Grassl