ffsim is a new open-source library that accelerates fermionic quantum circuit simulation by using particle number and spin symmetries to cut memory and runtime, outperforming FQE on benchmarks up to 64 qubits.
A theory of quantum subspace diagonalization
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ffsim: Faster simulation of fermionic quantum circuits
ffsim is a new open-source library that accelerates fermionic quantum circuit simulation by using particle number and spin symmetries to cut memory and runtime, outperforming FQE on benchmarks up to 64 qubits.