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@ARTICLE{Possel:1046962,
      author       = {Possel, Clemens and Hahn, Walter and Shirazi, Reza and
                      Walt, Marina and Pinski, Peter and Wilhelm-Mauch, Frank and
                      Bagrets, Dmitry},
      title        = {{T}runcated {V}ariational {H}amiltonian {A}nsatz: efficient
                      quantum circuit design for quantum chemistry and material
                      science},
      reportid     = {FZJ-2025-04030, arXiv:2505.19772v1},
      year         = {2025},
      abstract     = {Quantum computing has the potential to revolutionize
                      quantum chemistry and material science by offering solutions
                      to complex problems unattainable with classical computers.
                      However, the development of efficient quantum algorithms
                      that are efficient under noisy conditions remains a major
                      challenge. This paper introduces the truncated Variational
                      Hamiltonian Ansatz (tVHA), a novel circuit design for
                      conducting quantum calculations on Noisy Intermediate-Scale
                      Quantum (NISQ) devices. tVHA provides a promising approach
                      for a broad range of applications by utilizing principles
                      from the adiabatic theorem in solid state physics. Our
                      proposed ansatz significantly reduces the parameter count
                      and can decrease circuit size substantially, with a
                      trade-off in accuracy. Thus, tVHA facilitates easier
                      convergence within the variational quantum eigensolver
                      framework compared to state-of-the-art ansätze such as
                      Unitary Coupled Cluster (UCC) and Hardware-Efficient Ansatz
                      (HEA). While this paper concentrates on the practical
                      applications of tVHA in quantum chemistry, demonstrating its
                      suitability for both weakly and strongly correlated systems
                      and its compatibility with active space calculations, its
                      underlying principles suggest a wider applicability
                      extending to the broader field of material science
                      computations on quantum computing platforms.},
      cin          = {PGI-12},
      cid          = {I:(DE-Juel1)PGI-12-20200716},
      pnm          = {5221 - Advanced Solid-State Qubits and Qubit Systems
                      (POF4-522)},
      pid          = {G:(DE-HGF)POF4-5221},
      typ          = {PUB:(DE-HGF)25},
      eprint       = {2505.19772v1},
      howpublished = {arXiv:2505.19772v1},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2505.19772v1;\%\%$},
      url          = {https://juser.fz-juelich.de/record/1046962},
}