Gabriel Jaumà

Sep 20, 2023 | link.aps.org | Francisco Escudero |Guillermo F. Peñas |David Fernández-Fernández |Gabriel Jaumà

Variational algorithms have received significant attention in recent years due to their potential to solve practical problems using noisy intermediate-scale quantum (NISQ) devices. A fundamental step of these algorithms is the evaluation of the expected value of Hamiltonians, and hence efficient schemes to perform this task are required. The standard approach employs local measurements of Pauli operators and requires a large number of circuits.