Quantum fast multipole method yields electronic structure simulation gate complexity t(η^{4/3}N^{1/3} + η^{1/3}N^{2/3})(η N t / ε)^{o(1)}, providing roughly O(η) speedup over prior work for N < η^7.
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SPRINT and GRADE cut Toffoli cost 4.5x versus prior Trotter methods for Li4Mn2O X-ray spectrum simulation while using 5.5x fewer qubits than qubitization alternatives.
ROQAM formulates Green's function estimation via orthogonal polynomials to preserve Hessenberg structure under finite precision, enabling lower precision with depth and outperforming QSVD by orders of magnitude in resource estimates for a quantum impurity model.
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Quantum simulation of electronic structure via quantum fast multipole method
Quantum fast multipole method yields electronic structure simulation gate complexity t(η^{4/3}N^{1/3} + η^{1/3}N^{2/3})(η N t / ε)^{o(1)}, providing roughly O(η) speedup over prior work for N < η^7.
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Theory and practice of Trotter product formulas for quantum chemistry
SPRINT and GRADE cut Toffoli cost 4.5x versus prior Trotter methods for Li4Mn2O X-ray spectrum simulation while using 5.5x fewer qubits than qubitization alternatives.
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Estimating Green's functions with a robust quantum Arnoldi method
ROQAM formulates Green's function estimation via orthogonal polynomials to preserve Hessenberg structure under finite precision, enabling lower precision with depth and outperforming QSVD by orders of magnitude in resource estimates for a quantum impurity model.