Pith Number

pith:B5FXOULK

pith:2026:B5FXOULKX2OSS4SQEBHZ3LMNKG

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Storage of telecom-band time-bin qubits in thin-film lithium niobate

Tian-Shu Yang, Xiao-Jie Wang, Yong-Min Li, Yong-Teng Wang, Zi-Wei Zhao

Thin-film lithium niobate doped with erbium ions stores telecom time-bin qubits on chip for 400 nanoseconds at 1.95 percent efficiency.

arxiv:2605.13545 v1 · 2026-05-13 · quant-ph · physics.optics

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Claims

C1strongest claim

We realized the first on-chip quantum memory using erbium ions doped TFLN. The developed quantum memory achieves a storage time of 400 ns with an efficiency of 1.95%, ... single-photon-level coherent pulses are encoded into time-bin qubits and stored with a fidelity of 96.8%, surpassing the classical limit achievable by measure-and-prepare strategy.

C2weakest assumption

The assumption that the reported fidelity and multimode storage measurements confirm preservation of quantum coherence rather than classical effects or measurement artifacts, particularly that the time-bin encoding and retrieval truly exceed the classical measure-and-prepare bound without unaccounted leakage or calibration issues.

C3one line summary

First on-chip quantum memory in erbium-doped thin-film lithium niobate stores telecom time-bin qubits for 400 ns with 1.95% efficiency and 96.8% fidelity, exceeding the classical limit.

References

49 extracted · 49 resolved · 0 Pith anchors

[1] Wang, J., Sciarrino, F., Laing, A. & Thompson, M. G. Integrated photonic quantum technologies.Nature Pho- tonics14, 273–284 (2020) 2020

[2] Pelucchi, E.et al.The potential and global outlook of integrated photonics for quantum technologies.Nature Reviews Physics4, 194–208 (2022) 2022

[3] Moody, G.et al.2022 roadmap on integrated quan- tum photonics.Journal of Physics: Photonics4, 012501 (2022) 2022

[4] Labonté, L.et al.Integrated photonics for quantum com- munications and metrology.PRX Quantum5, 010101 (2024) 2024

[5] W., Pernice, W., Srinivasan, K., Benson, O 2020

Receipt and verification

First computed	2026-05-18T02:44:23.916988Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f4b77516abe9d297250204f9dad8d51a72fc29d07a4fbb4e0d27545a6690bde

Aliases

arxiv: 2605.13545 · arxiv_version: 2605.13545v1 · doi: 10.48550/arxiv.2605.13545 · pith_short_12: B5FXOULKX2OS · pith_short_16: B5FXOULKX2OSS4SQ · pith_short_8: B5FXOULK

Agent API

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/B5FXOULKX2OSS4SQEBHZ3LMNKG \
  | 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: 0f4b77516abe9d297250204f9dad8d51a72fc29d07a4fbb4e0d27545a6690bde

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf495eb8ec14dcbd51ced78478b952d322b59ba2dd77ff069ffc6d59e3689625",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2026-05-13T13:54:33Z",
    "title_canon_sha256": "8af154db4fdd65c36d0bd917772ec09781a082d4b86569af74dd807fc596b6c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.13545",
    "kind": "arxiv",
    "version": 1
  }
}