Chao Liu

Hamiltonian-Aware ADAPT Variational Quantum Eigensolver for Molecular Ground-State Simulation

Abstract Designing compact ansätze for the Variational Quantum Eigensolver (VQE) is crucial for calculating energies of large molecules on near-term quantum devices. However, the widely used Adaptive Derivative-Assembled Pseudo-Trotter (ADAPT) ansätze present two challenges: th...

Resource-Efficient Simulation of Molecular Groundand Excited States Based on Contextual Subspace and Quantum SubspaceExpansion

Abstract Predicting spectra and photochemical pathways relies on the computation of molecular excited states. However, the practicality of near-term variational quantum algorithms is threatened by the prohibitive growth of measurement overheads. Integrating Quantum Subspace Expan...