01
Describe
Express the problem and constraints in natural language.
LEONA QUANTUM / ABOUT
Quantum technology,for more minds.
Leona Quantum is building a next-generation quantum operating system that carries a problem from natural language through algorithm design, execution, and verification.
01 / WHY
Quantum work is still divided across too many layers.
The promise of quantum computing is real. Reaching it, however, still means moving between quantum hardware, cloud services, SDKs, algorithm design, implementation, and verification.
That fragmentation leaves domain experts in chemistry, finance, optimization, and other fields with a high barrier between the problem they understand and the quantum tools that may help them explore it.
We are building Leona Quantum to make that path coherent: one environment for turning a question into work that can be run, inspected, and used again.
02 / WHAT WE BUILD
From a question to a quantum circuit you can inspect.
Leona keeps the development loop together. The AI plans and builds, the simulator returns evidence, and the result becomes reusable knowledge instead of disappearing into a one-off experiment.
02
Design & run
Turn the plan into quantum code and execute it in a supported environment.
03
Verify
Review the result, its checks, and the conditions that produced it.
04
Keep & reuse
Preserve the circuit and evidence so the work can be revisited and extended.
03 / DIRECTION
Make quantum computing a foundation people can keep building on.
Our aim is to lower three barriers at once: specialist knowledge, implementation, and verification.
Domain researchers should be able to explore their own questions with quantum methods. Independent researchers should be able to move faster without losing rigor. Learners should be able to understand quantum computing through circuits that actually run.
- 01Domain R&D
- 02Independent research
- 03Learning & education
04 / TEAM
Different disciplines. One system.
Leona Quantum was founded by three builders working across computer science, physical informatics, quantum machine learning, robotics, and AI for science.
01Co-founder
Rui Suzuki
Keio University · Information and Computer Science
Rui has worked on robotics competitions, AI companion robots, and Vision-Language-Action research, with a focus on carrying theory into systems that work in the physical world.
- Robotics
- VLA
- Engineering
02Co-founder
Rei Watanabe
Keio University · Applied Physics and Physico-Informatics
Rei researches spintronics and topological insulators, and has also worked in machine-learning education and learning support for displaced communities.
- Quantum materials
- Machine learning
- Education
03Co-founder
Eshaan Mistry
UC Berkeley · Physics, Computer Science, and Chemistry
Eshaan has applied AI to physical simulation, life science, and quantum machine learning through work at Lawrence Berkeley National Laboratory, NASA Ames Research Center, and research teams at Berkeley and Keio.
- AI for science
- Quantum ML
- Life science
05 / ALONGSIDE US
Research roots, with experienced guidance.
AIC SPARK
Selected for the Student Program for AI Research at Keio by Keio University's AI Center.
So Tanaka
Professor at Keio University and director of the Keio Sustainable Quantum AI Research Center.
BUILD WITH US
Bring us the quantum question you want to make real.
Talk with us about research, product access, or a problem worth exploring together.