Pith Number

pith:QMGBD3EL

pith:2026:QMGBD3ELT7LI6TYLDJ4N7SXEFT

not attested not anchored not stored refs pending

Optimizing Quantum Entanglement Preservation in a Qubit Qubit System with Dzyaloshinskii Moriya Interaction under Noisy Magnetic Fields via Feedback Control

Seyed Mohsen Moosavi Khansari

Feedback control of DM interaction doubles average negativity and improves sensing sensitivity by a factor of 2.4 under colored noise.

arxiv:2605.02151 v3 · 2026-05-04 · quant-ph

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\usepackage{pith}
\pithnumber{QMGBD3ELT7LI6TYLDJ4N7SXEFT}

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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

Our simulations show that feedback increases the time averaged negativity from 0.21 to 0.42 for α=1 at noise amplitude σ=0.5, leading to a factor 2.4 improvement in sensitivity over the classical shot noise limit.

C2weakest assumption

The model assumes real-time, noise-free adjustment of the DM interaction strength D_z(t) is possible and that the stochastic magnetic fields follow a specific colored-noise spectrum fully captured by the chosen Lindblad form.

C3one line summary

Feedback control on DM interaction strength doubles time-averaged negativity under colored magnetic noise and yields 2.4 times better quantum Fisher information for static field estimation.

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-06-03T01:05:14.381202Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

830c11ec8b9fd68f4f0b1a78dfcae42cc2de3073cf4cf445f6be5552b117dfca

Aliases

arxiv: 2605.02151 · arxiv_version: 2605.02151v3 · doi: 10.48550/arxiv.2605.02151 · pith_short_12: QMGBD3ELT7LI · pith_short_16: QMGBD3ELT7LI6TYL · pith_short_8: QMGBD3EL

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/QMGBD3ELT7LI6TYLDJ4N7SXEFT \
  | 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: 830c11ec8b9fd68f4f0b1a78dfcae42cc2de3073cf4cf445f6be5552b117dfca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c622ad50fbca4101e9fe660d1219ffa52ccd0b1000a159fb427afc35b89dac6",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-05-04T02:27:09Z",
    "title_canon_sha256": "0404c69648d36f1a43a703f38af52dcdddeef8498bcd5b913cd8e35e184f30bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.02151",
    "kind": "arxiv",
    "version": 3
  }
}