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Hauptverfasser: Sung, Kevin J., Choi, Inho, Amico, Mirko, Andrews, Bartholomew, Ayantuna, Esra, Kawashima, Yukio, Lin, Wan-Hsuan, Omanovic, David, Piccinelli, Samuele, Moreno, Javier Robledo, Saki, Abdullah Ash, Shee, James, Shin, Soyoung, Tran, Minh C., Ueda, Kento, Zhang, Haimeng, Motta, Mario
Format: Preprint
Veröffentlicht: 2026
Schlagworte:
Online-Zugang:https://arxiv.org/abs/2605.03123
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author Sung, Kevin J.
Choi, Inho
Amico, Mirko
Andrews, Bartholomew
Ayantuna, Esra
Kawashima, Yukio
Lin, Wan-Hsuan
Omanovic, David
Piccinelli, Samuele
Moreno, Javier Robledo
Saki, Abdullah Ash
Shee, James
Shin, Soyoung
Tran, Minh C.
Ueda, Kento
Zhang, Haimeng
Motta, Mario
author_facet Sung, Kevin J.
Choi, Inho
Amico, Mirko
Andrews, Bartholomew
Ayantuna, Esra
Kawashima, Yukio
Lin, Wan-Hsuan
Omanovic, David
Piccinelli, Samuele
Moreno, Javier Robledo
Saki, Abdullah Ash
Shee, James
Shin, Soyoung
Tran, Minh C.
Ueda, Kento
Zhang, Haimeng
Motta, Mario
contents 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.
format Preprint
id arxiv_https___arxiv_org_abs_2605_03123
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle ffsim: Faster simulation of fermionic quantum circuits
Sung, Kevin J.
Choi, Inho
Amico, Mirko
Andrews, Bartholomew
Ayantuna, Esra
Kawashima, Yukio
Lin, Wan-Hsuan
Omanovic, David
Piccinelli, Samuele
Moreno, Javier Robledo
Saki, Abdullah Ash
Shee, James
Shin, Soyoung
Tran, Minh C.
Ueda, Kento
Zhang, Haimeng
Motta, Mario
Quantum Physics
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.
title ffsim: Faster simulation of fermionic quantum circuits
topic Quantum Physics
url https://arxiv.org/abs/2605.03123