Fermionic simulation algorithms on qubit hardware require efficient routing of nonlocal interactions to minimize overall cost. Recent advancements have reduced Jordan-Wigner routing overhead to polylogarithmic depth under all-to-all connectivity, but this benefit degrades significantly for 2D nearest-neighbor architectures, resulting in a depth of $O(\sqrt{N}\,\mathrm{polylog}\,N)$ for $N$ fermionic modes. A new approach achieves asymptotically optimal depth fermionic permutation on 2D grid quantum architecture without ancillas, addressing this critical limitation1. By optimizing the routing of fermionic interactions, this method has the potential to significantly reduce the computational resources required for simulating complex fermionic systems. This breakthrough matters to quantum computing practitioners because it enables more efficient simulation of fermionic systems on near-term quantum hardware, paving the way for practical applications in fields like chemistry and materials science.
Asymptotically Optimal Depth Fermionic Permutation on 2D Grid Quantum Architecture without Ancillas
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Why This Matters
Recent works reduce this Jordan-Wigner routing overhead to polylogarithmic depth under all-to-all connectivity, but degrade to $O(\sqrt{N}\,\mathrm{polylog}\,N)$ for $N$ fermionic
References
- Authors. (2026, May 25). Asymptotically Optimal Depth Fermionic Permutation on 2D Grid Quantum Architecture without Ancillas. arXiv Quantum Physics. https://arxiv.org/abs/2605.26041v1
Original Source
arXiv Quantum Physics
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