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Quantum dots cellular automata (QCA) are novel devices which are promising in the era of nanoscale computing. This paper presents the design of MX-CQCA based ripple carry adder (RCA). We first compare the design of traditional full adder based ripple carry adder and MX-CQCA based ripple carry adder in HDL environment. Also, the QCA layout of MX-CQC...
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This book presents the theoretical results achieved in the investigation of Quantum cellular automata concept (QCA). QCA is a novel approach to prove Logical Computation in Nano scale. Elementary QCA circuits to FPGA QCA Circuits are designed and studied their operation at Cryogenic temperature. Different types of Modeling like Statistcal, Probabil...
Quantum Dot cellular Automata is quite promising alternative to CMOS devices that performs its operation using electronic charge of a cell. The circuit based on Quantum dot automata has various advantage like very high speed, low power consumption, high integrity and high parallel processing. In this paper we focused on designing of LUT (Look Up Ta...
Although QCA (Quantum-dot Cellular Automata) is a promising nanotechnology to replace CMOS (Complementary Metal-Oxide-Semiconductor), it has several known reliability problems. Consequently, the design of robust QCA structures is a mandatory step towards the consolidation of this new technology. This paper presents a novel methodology for error ana...
Quantum-dot cellular automata (QCA) is a beneficial technology which is counted as one potential replacements for typical complementary metal oxide semiconductor (CMOS) archetype. QCA has excessive expedient thickness, particular performance speed with exceptionally low power depletion. Researchers have viewed plentiful devices of QCA-based logic c...
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Power consumption in irreversible QCA logic circuits is a vital and a major issue; however in the practical cases, this focus is mostly omitted.The complete power depletion dataset of different QCA multiplexers have been worked out in this paper. At −271.15 °C temperature, the depletion is evaluated under three separate tunneling energy levels. All...
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... Also, these optimized QCA reversible Gates are used to achieve the design of QCA 4-Bit reversible parity checker and 3-bit reversible binary to Grey converter. Plenty of the QCA-based designs of reversible logic Gates and circuits have been reported previously by the researchers [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]. In [6] some optimized scalable reversible logic Gates have been designed in the QCA technology and compared with conventional CMOS technology. ...
... Table 1 shows a detailed comparison between the proposed designs and the previous works. As it can be seen in this table, some of the previous works [10,18] have been designed using the coplanar wire-crossing scheme and the QCA layouts in [4,5,11,25] use the multi-layer wire-crossing method. From Table 1 it is clear that our presented QCA layouts are better than all the previous works with a considerable superiority. ...
... Without wire-crossing Fredkin [10] 0.273 231 4 Coplanar Fredkin [11] 0.19 187 9 ...
Quantum-dot cellular automata (QCA) is a developing nanotechnology, which seems to be a good candidate to replace the conventional complementary metal-oxide-semiconductor (CMOS) technology. The QCA has the advantages of very low power dissipation, faster switching speed, and extremely low circuit area, which can be used in designing nanoscale reversible circuits. In this paper, the new efficient QCA implementations of the basic reversible Gates such as: CNOT, Toffoli, Feynman, Double Feynman, Fredkin, Peres, MCL, and R Gates are presented based on the straight interactions between the QCA cells. Also, the designs of 4-Bit reversible parity checker and 3-bit reversible binary to Grey converter are introduced using these optimized reversible Gates. The proposed layouts are designed and simulated using QCADesigner software. In comparison with previous QCA designs, the proposed layouts are implemented with the minimum area, minimum number of cells, and minimum delay without any wire-crossing techniques. Also, in comparison with the CMOS technology, the proposed layouts are more efficient in terms of the area and power. Therefore, our designs can be used to realize quantum computation in ultralow power computer communication.
