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Sparrow Quantum

company Quantum / Photonics
sparrowquantum.com Frederiksberg

Niels Bohr Institute spinout (founded 2016) designing and producing photonic quantum chips — on-chip deterministic single-photon sources that emit long, reliable streams of single photons for quantum computing and communication.

Semiconductor activity in Denmark

Sparrow Quantum, a spinout from Professor Peter Lodahl's quantum-optics group at the Niels Bohr Institute (founded 2016, based in Copenhagen/Frederiksberg), designs and produces photonic quantum chips. Its flagship Sparrow Core is an on-chip deterministic single-photon source that delivers long streams of single photons on demand — a key building block for scaling photonic quantum computing, quantum communication and future quantum-internet infrastructure. The company has raised tens of millions of euros to industrialise its single-photon source technology, building on more than two decades of NBI research.

Key facts

  • Founded 2016, spinout of Peter Lodahl's group at the Niels Bohr Institute
  • Flagship Sparrow Core: on-chip deterministic single-photon source
  • Raised tens of millions of euros (Series A, 2024–2025)
  • For photonic quantum computing, communication and quantum internet

Technology focus

  • On-chip deterministic single-photon sources
  • Photonic quantum chip design and production
  • Light-matter interfaces for optical quantum tech
  • Single-photon streams for quantum information

R&D footprint

~30 estimated R&D staff in Denmark — ChipDiplo employment band 10-50; Niels Bohr Institute spinout

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