Pith Number

pith:CHKCOGLA

pith:2025:CHKCOGLATA3RSJUDB42W4Z7YO7

not attested not anchored not stored refs resolved

Hybrid Predictive Quantum Feedback: Extending Qubit Lifetimes Beyond the Wiseman-Milburn Limit

Ali Abu-Nada, Aryan Iliat, Russell Ceballos

A hybrid ancilla and predictor feedback scheme extends qubit lifetimes beyond the Wiseman-Milburn limit by a factor of three to four.

arxiv:2511.13774 v3 · 2025-11-15 · quant-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CHKCOGLATA3RSJUDB42W4Z7YO7}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

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

Using IBM-scale parameters (baseline T1 = 50 μs), numerical simulations surpass the W–M limit, achieving ∼3–4× longer T1 together with improved population retention and integrated energy.

C2weakest assumption

The ancilla is intentionally engineered to decay much faster than the system while remaining coherently coupled without introducing new decoherence channels, and that the supervised predictor can deliver accurate real-time forecasts of the homodyne current under hardware latency.

C3one line summary

Hybrid feedback with a coherently coupled fast ancilla and a homodyne-current predictor achieves 3-4 times longer qubit T1 than the Wiseman-Milburn limit in Lindblad-derived rates and IBM-scale simulations.

References

36 extracted · 36 resolved · 1 Pith anchors

[1] Non- markovian homodyne-mediated feedback on a two-level atom: a quantum trajectory treatment, 2001

[2] H.-P. Breuer and F. Petruccione,The Theory of Open Quantum Systems. Oxford University Press, 2002 2002

[3] M. A. Nielsen and I. L. Chuang,Quantum computation and quantum information. Cambridge University Press, 2010 2010

[4] A quantum engineer’s guide to superconducting qubits, 2019

[5] Optimizing quantum gates towards the scale of logical qubits, 2024

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-06-03T01:05:07.311192Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

11d427196098371926830f356e67f877d263afc536db9ddcbdfdc899add1535a

Aliases

arxiv: 2511.13774 · arxiv_version: 2511.13774v3 · doi: 10.48550/arxiv.2511.13774 · pith_short_12: CHKCOGLATA3R · pith_short_16: CHKCOGLATA3RSJUD · pith_short_8: CHKCOGLA

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/CHKCOGLATA3RSJUDB42W4Z7YO7 \
  | 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: 11d427196098371926830f356e67f877d263afc536db9ddcbdfdc899add1535a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "204e11128e9937f1240324968f20e322175986c3c4babfffc32febb7d5dd336b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-11-15T09:45:47Z",
    "title_canon_sha256": "80911e04d69d97118b6678498f2e85068297ee084fb895d3c6591fccc81e2e82"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2511.13774",
    "kind": "arxiv",
    "version": 3
  }
}