LQUOM — vendor dossier

LQUOM

NetworkingQuantum memory
L

Quantum-repeater technology startup spun out of Tomoyuki Horikiri's lab at Yokohama National University in 2020. Productises a cavity-enhanced entangled-photon source matched to Pr:YSO rare-earth quantum memory at 606 nm for long-distance quantum communication. Sells the LQ-PS-100 two-photon source and runs joint R&D programmes with Japanese telcos and integrators (SoftBank, Toshiba, Anritsu). Demonstrated entangled-photon quantum communication across the Tokyo metropolitan area with SoftBank in 2023; closed a Series B in October 2025 led by SBI Investment and signed a long-distance-QKD joint research agreement with Toshiba in March 2026.

HQ
Yokohama, Japan
Founded
2020
Status
private
Last verified
Fri May 15 2026 08:00:00 GMT+0800 (Singapore Standard Time)

Timeline

2020202120222023202420252026202720282029today
2020-01
Company founded as a spinout from the Horikiri Laboratory at Yokohama National University
2023-09
SoftBank x LQUOM launch entangled-photon quantum-communication field study across the Tokyo metropolitan area
2025-10
Series B closes — led by SBI Investment with ORIX Capital, Osaka University VC, SMBC Venture Capital, JMTC Capital, Anritsu, Bio-Sight Capital; amount undisclosed
2026-03
Joint research agreement with Toshiba on long-distance QKD using quantum repeater technology — March 2026 to March 2027; Toshiba leads QKD-protocol/architecture studies, LQUOM leads quantum-repeater architecture
2026
Use Series B proceeds to scale large-scale demonstration experiments and reinforce global partnerships toward commercial quantum-repeater deployment
2027
Conclude Toshiba joint research programme on optimal QKD-protocol / repeater-architecture combinations for long-distance metro-and-beyond QKD
shipped milestone public roadmap

Current flagship

LQ-PS-100 — cavity-enhanced two-photon entangled-photon source matched to Pr:YSO quantum memory (606 nm)

Milestones

  1. 2026-03
    Joint research agreement with Toshiba on long-distance QKD using quantum repeater technology — March 2026 to March 2027; Toshiba leads QKD-protocol/architecture studies, LQUOM leads quantum-repeater architecture
    Networking press source ↗
  2. 2025-10
    Series B closes — led by SBI Investment with ORIX Capital, Osaka University VC, SMBC Venture Capital, JMTC Capital, Anritsu, Bio-Sight Capital; amount undisclosed
    Networking press source ↗
  3. 2023-09
    SoftBank x LQUOM launch entangled-photon quantum-communication field study across the Tokyo metropolitan area
    Networking press source ↗
  4. 2020-01
    Company founded as a spinout from the Horikiri Laboratory at Yokohama National University
    Networking blog source ↗

Roadmap

  • 2027 Conclude Toshiba joint research programme on optimal QKD-protocol / repeater-architecture combinations for long-distance metro-and-beyond QKD source ↗
  • 2026 Use Series B proceeds to scale large-scale demonstration experiments and reinforce global partnerships toward commercial quantum-repeater deployment source ↗

Capability details

Quantum memory

Platform
pr-yso
Storage time
—
Retrieval efficiency
—
Fidelity
—
Wavelength
606 nm
Mode capacity
—

Networking

Role
repeater
Products
LQ-PS-100
5 unverified fields
  • modalities.memory.storage_time_ms
  • modalities.memory.retrieval_efficiency
  • modalities.memory.fidelity
  • modalities.memory.mode_capacity
  • shareholders — Stake percentages not disclosed for any holder; only round-participation lists are public

People

  • Kazuya Niizeki — Co-founder & CEO (since 2020) ↗
  • Tomoyuki Horikiri — Co-founder, CSO & Director (since 2020) ↗
  • Yuya Mochizuki — Director, COO & CFO (since 2020) ↗
  • Feng-Lei Hong — Advisor (since 2020) ↗

References