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The first application of a quantum algorithm to Feynman loop integrals isreviewed. The connection between quantum computing and perturbative quantumfield theory is feasible due to fact that the two on-shell states of a Feynmanpropagator are naturally encoded in a qubit. The particular problem to beaddressed is the identification of the causal singular configurations ofmultiloop Feynman diagrams. The identification of such configurations iscarried out through the implementation of a modified Grover's quantum algorithmfor querying multiple solutions over unstructured datasets.

Quantum Algorithm for Querying Causality of Multiloop Scattering Amplitudes