Pith Number

pith:6HSERTD2

pith:2026:6HSERTD22WUJAJXNH2I55BFV5T

not attested not anchored not stored refs resolved

Giant nonlinear optical chirality in twisted heterobilayers

Bo Li, Gan Wang, Jiangbo Peng, Kian Ping Loh, Leyi Zhao, Luwei Zhou, Mingjie Li, Pengzhi Wang, Tao-Yuan Du, Xiang Zhang

Twisted MoS2/WSe2 heterobilayers produce SHG circular dichroism up to 1.96, near the theoretical maximum of 2.

arxiv:2605.17695 v1 · 2026-05-17 · physics.optics

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\pithnumber{6HSERTD22WUJAJXNH2I55BFV5T}

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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

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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

The magnitude of SHG circular dichroism reaches 1.96 near a 30° twist angle under 1260-nm excitation, approaching the theoretical limit of 2, with sign governed by structural handedness and reversal upon opposite incidence.

C2weakest assumption

The layer-resolved model correctly isolates helicity-dependent interference between the two monolayer SHG fields without significant contributions from interface defects, strain, or higher-order effects that would alter the observed dichroism magnitude.

C3one line summary

MoS2/WSe2 heterobilayers with controlled twist exhibit SHG circular dichroism up to 1.96, governed by structural handedness and explained by helicity-dependent interference via nonlinear Pancharatnam-Berry phase.

References

51 extracted · 51 resolved · 0 Pith anchors

[1] Kopp, V.I., Zhang, Z.-Q. & Genack, A.Z. Lasing in chiral photonic structures. Progress in Quantum Electronics 27, 369-416 (2003) 2003

[2] Haupert, L.M. & Simpson, G.J. Chirality in Nonlinear Optics. Annual Review of Physical Chemistry 60, 345-365 (2009) 2009

[3] Li, G., Zhang, S. & Zentgraf, T. Nonlinear photonic metasurfaces. Nat Rev Mater 2, 17010 (2017) 2017

[4] Koshelev, K., Tonkaev, P. & Kivshar, Y. Nonlinear chiral metaphotonics: a perspective. Advanced Photonics 5 (2023) 2023

[5] Lodahl, P. et al. Chiral quantum optics. Nature 541, 473-480 (2017) 2017

Formal links

1 machine-checked theorem link

Receipt and verification

First computed	2026-05-20T00:04:53.261710Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f1e448cc7ad5a89026ed3e91de84b5ecc463baaedf4335876665270d4ebc82a3

Aliases

arxiv: 2605.17695 · arxiv_version: 2605.17695v1 · doi: 10.48550/arxiv.2605.17695 · pith_short_12: 6HSERTD22WUJ · pith_short_16: 6HSERTD22WUJAJXN · pith_short_8: 6HSERTD2

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/6HSERTD22WUJAJXNH2I55BFV5T \
  | 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: f1e448cc7ad5a89026ed3e91de84b5ecc463baaedf4335876665270d4ebc82a3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c989ffa625cbfed1a066ac33c56c3dcbb8782f6886241a0bea40109fbc7aae4e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.optics",
    "submitted_at": "2026-05-17T23:24:11Z",
    "title_canon_sha256": "95fbe9c4a1ff0da8df94e2fe85387b8cd0cda0e332cebaf595d33218020dfdc2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.17695",
    "kind": "arxiv",
    "version": 1
  }
}