Pith Number

pith:CIXBBJU5

pith:2026:CIXBBJU5UU2FF4MUMECECZ6DLE

not attested not anchored not stored refs resolved

Massively Degenerate Coherent Perfect Absorption in Gradient-Index Fibers

\c{S}ahin K. \"Ozdemir, Helmut H\"orner, Stefan Rotter

A gradient-index fiber uses its self-imaging property to absorb arbitrary multimode light fields with reflectivities below one percent.

arxiv:2605.15998 v1 · 2026-05-15 · physics.optics

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\usepackage{pith}
\pithnumber{CIXBBJU5UU2FF4MUMECECZ6DLE}

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Record completeness

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2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

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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

standard GRIN profiles optimized for minimal intermodal dispersion enable highly efficient absorption of complex multimode fields, with field-of-view reflectivities well below 1% for realistic parameters.

C2weakest assumption

The self-imaging property of the GRIN fiber permits near-degenerate rephasing of many spatial modes simultaneously for arbitrary multimode input states (abstract, paragraph on generalization to multimode inputs).

C3one line summary

A standard gradient-index fiber enables highly efficient multimode coherent perfect absorption with reflectivities below 1% via self-imaging and minimal intermodal dispersion.

References

59 extracted · 59 resolved · 0 Pith anchors

[1] Resonant cavity-enhanced (RCE) photodetectors, 2025

[2] A theoretical study of resonant cavity- enhanced photodectectors with ge and si active regions, 1992

[3] R.B.Adler,L.J.Chu,andR.M.Fano,Electromagnetic energy transmission and radiation,

[4] Press, Cambridge, Mass.[u.a.], 1969), 621 pp 1969

[5] H. A. Haus,Waves and fields in optoelectronics, Prentice-Hall series in solid state physical electronics (Prentice-Hall, Englewood Cliffs, NJ, 1984), 402 pp 1984

Receipt and verification

First computed	2026-05-20T00:01:48.311131Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

122e10a69da53452f19461044167c35913d16a8f93d3d555e38afd450ace2dde

Aliases

arxiv: 2605.15998 · arxiv_version: 2605.15998v1 · doi: 10.48550/arxiv.2605.15998 · pith_short_12: CIXBBJU5UU2F · pith_short_16: CIXBBJU5UU2FF4MU · pith_short_8: CIXBBJU5

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/CIXBBJU5UU2FF4MUMECECZ6DLE \
  | 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: 122e10a69da53452f19461044167c35913d16a8f93d3d555e38afd450ace2dde

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "009758d21df28009ddf08a84e640f7db0c09ca86f57e3f21bbcab724eda8547a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2026-05-15T14:27:36Z",
    "title_canon_sha256": "513113c08d0be3c83da01f3e9055d3bba8f8230a7b39cbdf7fd920c5701601f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.15998",
    "kind": "arxiv",
    "version": 1
  }
}