As transistor geometries are reduced, quantum effects begin to dominate device performance. At some point, transistors cease to have the properties that make them useful computational components. New computing elements must be developed in order to keep pace with Moore’s Law. Quantum dot cellular automata (QCA) represent an alternative paradigm to transistor-based logic. QCA architectures that ...

Design of parity preserving logic based on emerging nanotechnology is very limited due to present technological limitation in tackling its high error rate. In this work, Quantum-dot cellular automata (QCA), a potential alternative to CMOS, is investigated for designing easily testable logic circuit. A novel self-testable logic structure referred to as the testable-QCA (t-QCA), using parity pres...

Quantum-dot Cellular Automata (QCA) technology is attractive due to its low power consumption, fast speed and small dimension; therefore it is a promising alternative to CMOS technology. Additionally, multiplexer is a useful part in many important circuits. In this paper we propose a novel design of 2:1 MUX in QCA. Moreover, a 4:1 multiplexer, an XOR gate and a latch are proposed based on our 2...

One of the challenges to scale down transistor size is leakage current through gate oxide. This leakage current results from quantum mechanical tunneling of electrons from the gate electrode through the oxide and in to the transistor channel. Instead of maintaining transistor functionality at smaller scales, a new technology called Quantum cellular automata technology is developed by Lent and K...

Reversible logic enables ultra-low power circuit design and quantum computation. Quantum-dot Cellular Automata (QCA) is the most promising technology considered to implement reversible circuits, mainly due correspondence between features of QCA circuits. This work aims push forward state-of-the-art QCA-based circuits implementation by proposing a novel full adder\full subtractor (FA\FS). At fir...

As an emerging technology, Quantum-dot Cellular Automata (QCA) has been extensively analyzed in the technical literature for implementing logic circuits; in this technology, the basic combinational circuit is the majority voter with three inputs. In this paper, the design of a logic gate which implements any combinational function of at most three input variables is presented. This type of gate...

Quantum-dot Cellular Automata (QCA) technology is a promising alternative nano-scale for CMOS technology. In digital circuits, multiplexer one of the most important components. this study, an efficient and single layer 2 to 1 QCA circuit proposed using majority gate inverter gate. addition, 4 8 circuits are implemented circuit. The developed in QCADesigner tool. According results, 1, utilize 16...

Quantum Cellular Automata (QCA) is one of the emerging nanotechnologies in which it is possible to implement reversible logic gates. QCA makes it possible to achieve high performance beyond the limits of existing CMOS technology. QCA does not have to dissipate its signal energy during transition. Further, there is no movement of electrons from one QCA cell to the other, there is no current flow...