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Paper detail

Generalization of CNOT-based Discrete Circular Quantum Walk: Simulation and Effect of Gate Errors

We investigate the counterparts of random walk in universal quantum computing and their implementation using standard quantum circuits. Quantum walk have been recently well investigated for traversing graphs with certain oracles. We focus our study on traversing a 1-D graph, namely a circle, and show how to implement discrete circular quantum walk in quantum circuits built with universal CNOT and single quit gates. We review elementary quantum gates and circuit decomposition and propose a a generalized version of the all CNOT based quantum discrete circular walk. We simulated these circuits on an IBM quantum supercomputer London IBM-Q with 5 qubits. This quantum computer has non perfect gates based on superconducting qubits, therefore we analyze the impact of errors on the fidelity of the Walker circuit.

preprint2020arXivOpen access
Iyed Ben SlimenAmor GueddanaVasudevan Lakshminarayanan
quant-ph
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Iyed Ben SlimenAmor GueddanaVasudevan Lakshminarayanan

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