Energy-filtered quantum states are promising candidates for efficiently simulating thermal
states. We explore a protocol designed to transition a product state into an eigenstate …

Variational quantum algorithms (VQAs), as one of the most promising routes in the noisy
intermediate-scale quantum (NISQ) era, offer various potential applications while also …

Reduced density matrices are central to studies of quantum systems. Due to the size of the
Hamiltonian scaling exponentially as system size increases, it is often infeasible to obtain …