2 papers
quant-ph2024
Ground and Excited States from Ensemble Variational Principles
Lexin Ding, Cheng-Lin Hong, Christian Schilling
The extension of the Rayleigh-Ritz variational principle to ensemble states with fixed weights lies ultimately at…
quant-ph2024
Refining the weighted subspace-search variational quantum eigensolver: compression of ansätze into a single pure state and optimization of weights
Cheng-Lin Hong, Luis Colmenarez, Lexin Ding +2
The weighted subspace-search variational quantum eigensolver (SSVQE) is a prominent algorithm for calculating excited-state properties of molecular quantum systems. In this work, w…