Ground state preparation in $(2+1)$-dimensional pure ${\mathbb{Z}}_2$ lattice gauge theory via deterministic quantum imaginary time evolution

Minoru Sekiyama, Lento Nagano

In this paper, we apply the deterministic quantum imaginary time evolution (QITE) algorithm to obtain the ground state of a $2+1$-dimensional pure ${\mathbb{Z}}_2$ lattice gauge theo…