Sparrow Quantum
Sparrow Quantum develops on-chip single-photon sources for quantum technologies, a spin-out from the Niels Bohr Institute. The Copenhagen-based company has raised $34M and employs 72 people.
The growth story
Sparrow Quantum grew from 7 to 72 employees between 2022 and 2026, raising $34M along the way, most recently a Seed in February 2026.
About
Sparrow Quantum builds light-matter interfaces, specifically on-chip deterministic single-photon sources, which are critical components for scaling optical quantum technologies. Its products are used by quantum technology companies seeking high-purity, high-efficiency photon generation.
The company was spun out in 2015 from Professor Peter Lodahl’s research group at the Niels Bohr Institute, leveraging 25+ years of research and nearly a decade of engineering expertise. It has raised $34M in funding, including a seed round in 2026, backed by investors like 2xN and the European Commission.
Founders and leadership
Engineering is the largest function at Sparrow Quantum, with 15 employees. The company has a median tenure of just one year, suggesting a relatively young and fluid workforce.
The Sparrow Quantum org chart
Kurt Stokbro (Chief Executive Officer and BOD) leads 16 mapped leaders with 5 direct reports. Click +N to expand a team; names link to the person’s public profile.
Departments, and which ones grew
Headcount by function: Research 19 (+111% YoY), Engineering 17 (+42% YoY), Business Development 10 (+11% YoY), Administrative 5 (0% YoY), Entrepreneurship 3 (0% YoY), Information Technology 3 (+200% YoY).
Talent flow
Sparrow Quantum recruits heavily from Danish academic institutions, with 11 employees from DTU - Technical University of Denmark and 8 from the Niels Bohr Institute. Alumni have moved to companies like Microsoft and Hamamatsu Photonics.
Most common previous employers of Sparrow Quantum staff: DTU - Technical University of Denmark (11), Niels Bohr Institute, University of Copenhagen (8), Ministry of Foreign Affairs of Denmark (3), DTU Physics (3), Harvard University (3), DTU Electro (3). Former Sparrow Quantum employees most often moved to DTU Electro (2), Microsoft (2), BUPL (1), Innovation Fund Denmark (1), Berner Fachhochschule BFH (1), Hamamatsu Photonics A/S (1).
Alumni worth knowing
Web traffic
Traffic mix: 0% direct, 0% search, 0% social, 0% paid.
What this company is made of
Most common skills at Sparrow Quantum: Python (Programming Language) (26), Data Analysis (22), Project Management (22), Research Skills (21), English (20), MATLAB (18), Optics (16), Problem Solving (16).
Where the team actually sits
Sparrow Quantum people are concentrated in Capital Region of Denmark, Denmark (41), Denmark (5), Copenhagen Metropolitan Area (2), San Francisco Bay Area (1).
Search footprint
Sparrow Quantum attracts about 48 organic search visits a month, traffic worth roughly $0K a month if bought through ads. It gained 2 ranking keywords and lost 3 in the last period.
Frequently asked
Sparrow Quantum has 72 employees as of September 2026.
Sparrow Quantum has raised $34M in total, most recently a Seed round in February 2026.
Sparrow Quantum was founded in 2015 by Peter Lodahl.
Kurt Stokbro (Chief Executive Officer and BOD) sits at the top of Sparrow Quantum's reporting structure, with 5 direct reports.
The most common previous employers of current Sparrow Quantum staff are DTU - Technical University of Denmark (11 people), Niels Bohr Institute, University of Copenhagen (8 people), Ministry of Foreign Affairs of Denmark (3 people).
Former Sparrow Quantum employees most often move to DTU Electro (2), Microsoft (2), BUPL (1).
Sparrow Quantum attracts about 48 organic search visits a month, worth roughly $0K a month in equivalent ad spend.
The most common skills among Sparrow Quantum staff are Python (Programming Language), Data Analysis, Project Management, Research Skills, English.
Sparrow Quantum staff are concentrated in Capital Region of Denmark, Denmark (41), Denmark (5), Copenhagen Metropolitan Area (2).
Sparrow Quantum has about 19 people in Research, up 111% over the past year, as of September 2026.
Sparrow Quantum has about 17 people in Engineering, up 42% over the past year, as of September 2026.
Computed from 52 current and 27 former Sparrow Quantum profiles, as of September 2026. Source: Crustdata.
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