New theoretical results prove Trotter error depends on diagonal BCH elements in the Hamiltonian eigenbasis, paired with O(n) compact BCH representations and software that enable accurate error estimates up to 100+ qubits.
The advantage of the symmetric BCH formula is that all commutators of even order cancel out, which is crucial in deriving our compact representations
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Practical Estimation of Trotter Error for Hamiltonian Simulation
New theoretical results prove Trotter error depends on diagonal BCH elements in the Hamiltonian eigenbasis, paired with O(n) compact BCH representations and software that enable accurate error estimates up to 100+ qubits.