TL;DR
The Fermionic Quantum Emulator (FQE) provides an efficient way to simulate fermionic quantum dynamics by leveraging symmetries, enabling larger and more complex simulations with reduced computational resources.
Contribution
The paper introduces the FQE, a new simulation library integrated with OpenFermion that exploits symmetries to improve fermionic quantum dynamics simulation efficiency.
Findings
Reduces memory usage by exploiting number and spin symmetries.
Enables simulation of larger quantum circuits at modest computational costs.
Provides detailed technical methods for fermionic quantum simulation.
Abstract
The fermionic quantum emulator (FQE) is a collection of protocols for emulating quantum dynamics of fermions efficiently taking advantage of common symmetries present in chemical, materials, and condensed-matter systems. The library is fully integrated with the OpenFermion software package and serves as the simulation backend. The FQE reduces memory footprint by exploiting number and spin symmetry along with custom evolution routines for sparse and dense Hamiltonians, allowing us to study significantly larger quantum circuits at modest computational cost when compared against qubit state vector simulators. This release paper outlines the technical details of the simulation methods and key advantages.
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