Pith Number

pith:MAQM26SC

pith:2026:MAQM26SCV5KZWIRXYBTBG7KGPS

not attested not anchored not stored refs resolved

Towards Deploying Optimistic Quantum Fourier Transforms: An Architecture-Algorithm Co-Design Study

Pedro L. S. Lopes

A hot-zone architecture lets the Optimistic Quantum Fourier Transform reach half its serial latency with roughly 500 extra logical ancillae and 128-qubit peak parallelism.

arxiv:2605.15297 v1 · 2026-05-14 · quant-ph

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The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

Across 256-2048-bit instances, the requirements for half-time performance converge to about 500 additional logical ancillae and a peak parallelism of 128 logical qubits.

C2weakest assumption

The surface-code fault-tolerant execution model together with the heuristic micro-scheduling of ripple-carry adders and catalytic phase-gradient addition accurately capture the dominant space-time costs on reconfigurable neutral-atom hardware (stated in the abstract as the basis for routing and parallelism analysis).

C3one line summary

A hot-zone architecture for OQFT on reconfigurable neutral-atom hardware yields tunable latency via 2-4 zones, converging to roughly 500 extra logical ancillae and 128-qubit peak parallelism for half-time performance on 256-2048 bit instances.

References

55 extracted · 55 resolved · 12 Pith anchors

[1] Halving the cost of quantum addition, 2018 · doi:10.22331/q-201

[2] A new quantum ripple-carry addition circuit 2004 · arXiv:quant-ph/0410184

[3] arXiv preprint arXiv:1210.4626 , year= 2013 · arXiv:1210.4626

[4] Quantum block lookahead adders and the wait for magic states , publisher = 2020

[5] Magic state cultivation: growing T states as cheap as CNOT gates 2024 · arXiv:2409.17595

Receipt and verification

First computed	2026-05-20T00:00:51.227925Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6020cd7a42af559b2237c066137d467cbc14844f9e63f72f095a0c0527b0fd95

Aliases

arxiv: 2605.15297 · arxiv_version: 2605.15297v1 · doi: 10.48550/arxiv.2605.15297 · pith_short_12: MAQM26SCV5KZ · pith_short_16: MAQM26SCV5KZWIRX · pith_short_8: MAQM26SC

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/MAQM26SCV5KZWIRXYBTBG7KGPS \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 6020cd7a42af559b2237c066137d467cbc14844f9e63f72f095a0c0527b0fd95

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "644c40e8e32b002684767de986a7779f634b05dc946ee2ca189fba33f0d9c4e2",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-05-14T18:11:04Z",
    "title_canon_sha256": "7ebdfaaf0b4a30733cc07906ef98e58cbdd85b6b4089b744f32c1d29b96170fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.15297",
    "kind": "arxiv",
    "version": 1
  }
}