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Fermionic quantum processing with programmable neutral atom arrays.

D González-Cuadra1,2, D Bluvstein3, M Kalinowski3

  • 1Institute for Theoretical Physics, University of Innsbruck, 6020 Innsbruck, Austria.

Proceedings of the National Academy of Sciences of the United States of America
|August 22, 2023

View abstract on PubMed

Summary
This summary is machine-generated.

This study introduces a new fermionic quantum processor for efficient simulation of many-body fermionic systems. It enables hardware-efficient simulations using local encoding and fermionic gates, advancing quantum chemistry and material science.

Keywords:
digital quantum simulationfermionic quantum processorlattice gauge theoriesquantum chemistrytweezer arrays

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Area of Science:

  • Quantum Computing
  • Computational Physics
  • Quantum Chemistry

Background:

  • Simulating many-body fermionic systems is computationally demanding for classical computers.
  • Existing qubit-based quantum computers face resource overheads due to nonlocal fermionic statistics, limiting near-term applications.

Purpose of the Study:

  • To present a novel fermionic quantum processor for hardware-efficient simulation of fermionic models.
  • To develop protocols for implementing nonlocal gates that guarantee Fermi statistics at the hardware level.

Main Methods:

  • Utilizing fermionic atoms in programmable tweezer arrays for local encoding.
  • Implementing fermionic gates and Rydberg-mediated interactions for efficient circuit decompositions.
  • Exploring combined fermion-qubit architectures for advanced quantum simulations.

Main Results:

  • Demonstrated efficient circuit decompositions for digital and variational quantum simulation algorithms.
  • Successfully applied the methods for molecular energy estimation.
  • Showcased potential for quantum phase estimation and lattice gauge theory simulations.

Conclusions:

  • The developed fermionic quantum processor offers a hardware-efficient approach to simulating complex fermionic systems.
  • This work paves the way for more accessible and powerful quantum simulations in various scientific domains.
  • The combined fermion-qubit architecture enhances capabilities for advanced quantum algorithms.