Pith Number

pith:N5MHYB3F

pith:2025:N5MHYB3FGPGBHU5WGDBLDDECBD

not attested not anchored not stored refs pending

Decoherence-free subspaces in the noisy dynamics of discrete-step quantum walks in a photonic lattice

Alberto Amo, \'Alvaro G\'omez-Le\'on, Cl\'ement Hainaut, Rajesh Asapanna

Certain bulk states in quantum walks stay coherent under constant noise while topological edge states decohere.

arxiv:2510.16204 v2 · 2025-10-17 · quant-ph · cond-mat.dis-nn · physics.optics

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N5MHYB3FGPGBHU5WGDBLDDECBD}

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

a class of bulk states can be more robust to a certain type of noise than topological edge states.

C2weakest assumption

The temporal noise remains constant within each Floquet period, which is the condition stated for the appearance of decoherence-free momentum subspaces in the bulk.

C3one line summary

Temporal noise constant within Floquet periods creates decoherence-free subspaces in bulk states of photonic quantum walks but destroys coherence in random noise cases and in topological edge states, as derived via a non-perturbative master equation and confirmed in a fiber-ring experiment.

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-27T01:05:39.065783Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f587c076533cc13d3b630c2b18c8208cb3e3801196dff809db286f54cc7cd25

Aliases

arxiv: 2510.16204 · arxiv_version: 2510.16204v2 · doi: 10.48550/arxiv.2510.16204 · pith_short_12: N5MHYB3FGPGB · pith_short_16: N5MHYB3FGPGBHU5W · pith_short_8: N5MHYB3F

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/N5MHYB3FGPGBHU5WGDBLDDECBD \
  | 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: 6f587c076533cc13d3b630c2b18c8208cb3e3801196dff809db286f54cc7cd25

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39b54e241dd3d394e411287e64d1f6a9cb7afb31f41ec398c02a0c934a0c1f49",
    "cross_cats_sorted": [
      "cond-mat.dis-nn",
      "physics.optics"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2025-10-17T20:35:14Z",
    "title_canon_sha256": "b80519460ffb1cfccd04ae53f05b7a4f5ae92e0764fd68066349f9061d01689e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2510.16204",
    "kind": "arxiv",
    "version": 2
  }
}