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Alternatives to a nonhomogeneous partial differential equation quantum algorithm
Alexandre C. Ricardo, G. P. L. M. Fernandes, E. I. Duzzioni, V. L. Campo, C. Villas-Bôas·May 11, 2022·DOI: 10.1103/PhysRevA.106.052431
Physics
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Abstract
Recently J. M. Arrazola et al. [Phys. Rev. A 100 , 032306 (2019)] proposed a quantum algorithm for solving nonhomogeneous linear partial differential equations of the form Aψ ( r ) = f ( r ) . Its nonhomogeneous solution is obtained by inverting the operator A along with the preparation and measurement of special ancillary modes. In this work we suggest modifications in its structure to reduce the costs of preparing the initial ancillary states and improve the precision of the algorithm for a specific set of inputs. These achievements enable easier experimental implementation of the quantum algorithm based on nowadays technology.