The implementation of fault-tolerant quantum gates on encoded logic qubits is considered. It is shown that transversal implementation of logic gates based on simple geometric control ideas is problematic for realistic physical systems suffering from imperfections such as qubit inhomogeneity or uncontrollable interactions between qubits. However, this problem can be overcome by formulating the t...

Multi-valued Fredkin gates (MVFG) are reversible gates and they can be considered as modified version of the better known reversible gate the Fredkin gate. Reversible logic gates are circuits that have the same number of inputs and outputs and have one-to-one and onto mapping between vectors of inputs and outputs; thus the vector of input states can be always reconstructed from the vectors of o...

Systematic cascading of molecular logic gates is an important issue to be addressed for advancing research in this field. We have demonstrated that photochemically triggered metal ion signals can be utilized towards that goal. Thus, independent logic gates were shown to work together while keeping their identity in more complex logic designs. Communication through the intermediacy of ion signal...

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...

By a combination of graphene oxide and DNA, a universal platform was developed for integration of multiple logic gates to implement both half adder and half subtractor functions. A constant undefined threshold range between high and low fluorescence output signals was set for all the developed logic gates.

Quantum dot Cellular Automata (QCA) is the new possibility for the future of nano-electronic computing technology which employs the principle of quantum mechanics. This paper, contributes to the design of Memory circuits based on conservative reversible logic gates & also the design is made testable using two test vectors. The conservative logic gates dominates the classical gates in terms of t...

In this paper, we propose a technique for concurrent optimization of CMOS logic gates for power-and-noisemargin and energy-and-noise-margin. The role of progressive sizing for performance enhancement of different gates has been expanded to cover other figures of merit, such as reliability, power, and energy. By using the examples of threeand four-input logic gates, we have demonstrated how mult...

Experimental Realization of Topologically-Protected All-Optical Logic Gates Based on Silicon Photonic Crystal Slabs In article number 2200329, Furong Zhang, Lu He, Huizhen Xiangdong and colleagues present the experimental realization topologically-protected all-optical logic gates Chips. All major functions (OR, XOR, NOT, XNOR, NAND, NOR, AND) can be realized even if some disorders exist. These...

Logic gates are devices that can perform logical operations by transforming a set of inputs into a predictable single detectable output. The hybridization properties, structure, and function of nucleic acids can be used to make DNA-based logic gates. These devices are important modules in molecular computing and biosensing. The ideal logic gate system should provide a wide selection of logical ...

This communication reports the increase in fluorescence resonance energy transfer (FRET) efficiency between two laser dyes in the presence of deoxyribonucleic acid (DNA). Two types of molecular logic gates have been designed where DNA acts as input signal and fluorescence intensity of different bands are taken as output signal. Use of these logic gates as a DNA sensor has been demonstrated.