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Quantum Simulation

A Quantum Algorithm for the Sub-Graph Isomorphism Problem

arXiv
Authors: Nicola Mariella, Andrea Simonetto

Year

2021

Paper ID

6711

Status

Preprint

Abstract Read

~2 min

Abstract Words

94

Citations

N/A

Abstract

We propose a novel variational method for solving the sub-graph isomorphism problem on a gate-based quantum computer. The method relies (1) on a new representation of the adjacency matrices of the underlying graphs, which requires a number of qubits that scales logarithmically with the number of vertices of the graphs; and (2) on a new Ansatz that can efficiently probe the permutation space. Simulations are then presented to showcase the approach on graphs up to 16 vertices, whereas, given the logarithmic scaling, the approach could be applied to realistic sub-graph isomorphism problem instances in the medium term.

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  • This paper contributes to the Quantum Simulation research area in the Quantum Articles archive.
  • It adds a 2021 reference point for readers tracking recent quantum research.
  • We propose a novel variational method for solving the sub-graph isomorphism problem on a gate-based quantum computer.

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