First heterogeneous quantum-classical computation on FLiBe clusters for tritium binding using EWF partitioning and ext-SQD on IBM hardware matches FCI fragment energies within 0.3 kcal/mol MAD but shows 12-110 kcal/mol errors in conformational and binding differences due to fragment construction.
ffsim: Faster simulation of fermionic quantum circuits
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abstract
We present ffsim, an open-source software library for fast simulation of fermionic quantum circuits. ffsim exploits conservation of particle number and the z component of spin, symmetries present in a wide range of fermionic systems, to dramatically reduce memory usage and simulation time compared to general-purpose quantum circuit simulators. Compared to FQE, a library with similar functionality, ffsim differs in software design and is faster on a representative set of simulation benchmarks. Beyond state vector evolution by basic fermionic gates, ffsim offers a number of additional features including variational ansatzes, Hamiltonian time evolution via Trotter-Suzuki product formulas, efficient sampling of Slater determinants, seamless integration with Qiskit and PySCF, and comprehensive documentation. We demonstrate ffsim's capabilities on scientific applications involving quantum circuits of up to 64 qubits.
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quant-ph 1years
2026 1verdicts
UNVERDICTED 1representative citing papers
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Quantum Computations on Fusion Blanket Molten Salts
First heterogeneous quantum-classical computation on FLiBe clusters for tritium binding using EWF partitioning and ext-SQD on IBM hardware matches FCI fragment energies within 0.3 kcal/mol MAD but shows 12-110 kcal/mol errors in conformational and binding differences due to fragment construction.