A permanent physical fault in communication lines usually leads to a failure. The feasibility of evolution of a self organized communication is studied in this paper to defeat this problem. In this case a communication protocol may emerge between blocks and also can adapt itself to environmental changes like physical faults and defects. In spite of faults, blocks may continue to function since ...

Quantum computation has demonstrated advantages over classical for special hard problems, where a set of universal quantum gates is essential. Geometric phases, which have built-in resilience to local noise, been used construct with excellent performance. However, this advantage smeared in previous schemes. Here, we propose state-independent nonadiabatic geometric quantum-gate scheme that able ...

Recently, Bravyi and König have shown that there is a trade-off between fault-tolerantly implementable logical gates and geometric locality of stabilizer codes. They consider locality-preserving operations which are implemented by a constant-depth geometrically-local circuit and are thus fault-tolerant by construction. In particular, they shown that, for local stabilizer codes in D spatial dime...

application of quantum-dot is a promising technology for implementing digital systems at nano-scale.  quantum-dot cellular automata (qca) is a system with low power consumption and a potentially high density and regularity. also, qca supports the new devices with nanotechnology architecture. this technique works based on electron interactions inside quantum-dots leading to emergence of quantum ...

Fault-tolerant quantum computing will require accurate estimates of the resource overhead under different error correction strategies, but standard metrics such as gate fidelity and diamond distance have been shown to be poor predictors logical performance. We present a scalable experimental approach based on Pauli reconstruction predict performance concatenated codes. Numerical evidence demons...

Domino circuits are widely used in high-performance CMOS microprocessors. However, textbook domino pipelines suffer significant timing overhead from clock skew, latch delay, and the inability to borrow time. To eliminate this overhead, some designers provide multiple overlapping clock phases such that domino gates are always ready for evaluation by the time critical inputs arrive and do not pre...

A general scheme to perform universal, fault-tolerant quantum computation within decoherence-free subspaces (DFSs) is presented. At most two-qubit interactions are required, and the system remains within the DFS throughout the entire implementation of a quantum gate. We show explicitly how to perform universal computation on clusters of the four-qubit DFS encoding one logical qubit each under s...