Most of Exclusive-OR(XOR) logic gates on quantum-dot cellular automata(QCA) is based on configuration of 2-input, and they are hardly to be scalable and exists unbearable noise because they are only focused on decrease of latency and space. In this paper, we propose how to make a scalable logic using a wire crossing technique, and give examples of two expanded XOR gate using typical logic gates...

We propose and demonstrate that periodically poled lithium niobate (PPLN) can act as an ultrafast three-input XOR gate for differential phase-shift keying (DPSK) signals based on cascaded sum- and difference-frequency generation. PPLN-based all-optical three-input Boolean XOR operations for 20 Gbits/s return-to-zero DPSK (RZ-DPSK), 40 Gbits/s RZ-DPSK, and 20 Gbits/s non-return-to-zero DPSK sign...

E. Fradkin1, Chetan Nayak2, A. Tsvelik3, Frank Wilczek4 1 Dept. of Physics, University of Illinois at Urbana-Champaign, Urbana, IL, 61801 2 Institute for Theoretical Physics, University of California, Santa Barbara, CA, 93106-4030 3 Department of Theoretical Physics, University of Oxford, 1 Keble Road, OX1 3NP, U.K. 4 School of Natural Sciences, Institute for Advanced Study, Olden Lane, Princet...

In most of the digital systems adder lies in the critical path that effects the overall speed of the system. So enhancing the performance of the 1-bit full adder cell is the main design aspect. The paper proposes the novel design of a 3T XOR gate combining complementary CMOS with pass transistor logic. The design has been compared with earlier proposed 4T and 6T XOR gates and a significant impr...

Deadline: August 29, 2008 For more information contact: [email protected] or call Denise Lecy at 507-284-4070. Dowhat you love.

In this paper, the nonlinear effect of Kerr on increasing efficiency multi-channel all-optical metal-insulator-metal logic gates with heterogeneous metals is investigated. study, linear interference between surface plasmonic polariton modes has been employed. The performance OR, AND, XOR and NOR numerically analyzed by finite element method. A structure fixed physical dimensions can manage seve...

The use of comparators in computation-based designs is extensive, making optimization crucial. While some comparator dynamic logic to achieve low-power consumption, the limitations low-speed and poor-noise margin make this approach challenging. proposed design offers a new solution that both area-efficient has high operating speed while consuming low-power. It was designed using 180nm technolog...

Quantum-dot Cellular Automata (QCA) is one of the most substitute emerging nanotechnologies for electronic circuits, because of lower power consumption, higher speed and smaller size in comparison with CMOS technology. The basic devices, a Quantum-dot cell can be used to implement logic gates and wires. As it is the fundamental building block on nanotechnology circuits. By applying XOR gate the...

We consider a realization of the XOR logic gate in a system involving two competing biocatalytic reactions, for which the logic-1 output is defined by these two processes causing a change in the optically detected signal. A model is developed for describing such systems in an approach suitable for evaluation of the analog noise amplification properties of the gate and optimization of its functi...