Pith Number

pith:2VGKWM5G

pith:2026:2VGKWM5GDOPZSFTKW6BYVPSJ4T

not attested not anchored not stored refs resolved

Single Spatio-Temporal Mode Bright Twin-Beam Source Across the Near- and Mid-Infrared

Amauri Perraton Elorza, Andrei Rasputnyi, Denis Seletskiy, Eli Martel, Esteban Murillo Zapata, Gabriel Demontigny, Maria Chekhova, Patrick Cusson, St\'ephane Virally

A bright entangled twin-beam source maintains nearly single spatio-temporal mode operation from near- to mid-infrared while directing 95-97 percent of its entanglement resource into occupational degrees of freedom.

arxiv:2605.15385 v1 · 2026-05-14 · quant-ph · physics.optics

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\usepackage{pith}
\pithnumber{2VGKWM5GDOPZSFTKW6BYVPSJ4T}

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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

In the bright few-mode limit, the total entanglement resource is clearly separated between modal and occupational degrees of freedom, and our source allocates up to 95-97% of that resource to the occupational sector.

C2weakest assumption

That the measured g^{(2)}(0) values and singular-value decomposition of the signal spectral density matrix accurately capture the true Schmidt number K without significant undetected modes, spatial filtering effects, or calibration errors in the non-degenerate setup.

C3one line summary

A tunable single spatio-temporal mode bright twin-beam source across near- and mid-infrared with high occupational entanglement allocation in the bright limit.

References

55 extracted · 55 resolved · 0 Pith anchors

[1] P . G. Kwiat, “Hyper-entangled states,” J. Mod. Opt.44, 2173–2184 (1997) 1997

[2] Bright squeezed vacuum: Entanglement of macroscopic light beams, 2015

[3] Raman-free, noble-gas- filled photonic-crystal fiber source for ultrafast, very bright twin-beam squeezed vacuum, 2015

[4] Heralded source of bright multi-mode mesoscopic sub-poissonian light, 2016

[5] Spectral properties of high-gain parametric down-conversion, 2012

Receipt and verification

First computed	2026-05-20T00:00:55.784104Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d54cab33a61b9f99166ab7838abe49e4e1e113fbd3ba32b6e2e75f3f2ad75a8e

Aliases

arxiv: 2605.15385 · arxiv_version: 2605.15385v1 · doi: 10.48550/arxiv.2605.15385 · pith_short_12: 2VGKWM5GDOPZ · pith_short_16: 2VGKWM5GDOPZSFTK · pith_short_8: 2VGKWM5G

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/2VGKWM5GDOPZSFTKW6BYVPSJ4T \
  | 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: d54cab33a61b9f99166ab7838abe49e4e1e113fbd3ba32b6e2e75f3f2ad75a8e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a80a2596bf9a6f2ba919caa13b646b3e1daf1b0e3afa5aafe4e7eab0430fbf2c",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-05-14T20:15:37Z",
    "title_canon_sha256": "583610e00d48513c472bb1dca4b27a5782cb6225c76effa3731acaa353e0c23a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.15385",
    "kind": "arxiv",
    "version": 1
  }
}