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.
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Develops a validation framework for quantum spin dynamics simulations anchored by neutron scattering and classical methods, using observable maps, uncertainty propagation, robustness tests, and actuator-aware feedback.
Approximate TD-dCC ansatzes from truncated BCH expansions reproduce exact many-body spectral features and quasiparticle weights on the Anderson model, H2O, and CH4, with a complementary fault-tolerant quantum algorithm for core-hole dynamics.
A hybrid quantization scheme enables efficient switching between first- and second-quantization in quantum circuits for molecular systems, claiming up to three orders of magnitude fewer ground-state preparations for 2-RDM measurements.
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Elucidating Many-Body Effects in Molecular Core Spectra through Real-Time Approaches: Efficient Classical Approximations and a Quantum Perspective
Approximate TD-dCC ansatzes from truncated BCH expansions reproduce exact many-body spectral features and quasiparticle weights on the Anderson model, H2O, and CH4, with a complementary fault-tolerant quantum algorithm for core-hole dynamics.
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Optimizing Quantum Chemistry Simulations with a Hybrid Quantization Scheme
A hybrid quantization scheme enables efficient switching between first- and second-quantization in quantum circuits for molecular systems, claiming up to three orders of magnitude fewer ground-state preparations for 2-RDM measurements.