Scaling of variational quantum circuit depth for condensed matter systems

We benchmark the accuracy of a variational quantum eigensolver based on a finite-depth quantum circuit encoding ground state of local Hamiltonians. We show that in gapped phases, the accuracy improves exponentially with the depth of the circuit. When trying to encode the ground state of conformally...

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Bibliographic Details
Main Authors: Carlos Bravo-Prieto, Josep Lumbreras-Zarapico, Luca Tagliacozzo, José I. Latorre
Format: Article
Language:English
Published: Verein zur Förderung des Open Access Publizierens in den Quantenwissenschaften 2020-05-01
Series:Quantum
Online Access:https://quantum-journal.org/papers/q-2020-05-28-272/pdf/