Finding excited states on a quantum computer using unitary block optimization with VQE
ORAL
Abstract
The variational quantum eigensolver (VQE) is a well studied quantum algorithm for finding ground states of quantum systems. Significantly less work has been dedicated to finding excited states. In this presentation we describe a DMRG inspired framework called the unitary block optimization scheme to optimize and find excited states on a quantum computer. We describe our algorithm and benchmark and compare it against other approaches in finding low lying excited states of spin models.
*We acknowledge support from the Department of Energy grant DOE DESC0020165.
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Publication: Finding excited states on a quantum computer using unitary block optimization with VQE (planned)
Presenters
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Faisal Alam
- University of Illinois at Urbana-Champaign