Maximize the Power of Quantum Computing

QunaSys builds technology for quantum computing to achieve its full potential through our algorithm development to product engineering.
We will continue our R&D for a future where quantum computers can be used as a disruptive tool in industries such as materials, chemistry, drug discovery, and many more.


Quantum Chemical Calculations

Our world is full of chemical phenomena that remain unexplained even with the aid of the world's best supercomputers. Elucidating a phenomenon requires a great deal of time, cost, and repeated trial and error in experiments.

As Richard Feynman once said—

Nature isn’t classical, and if you want to make a simulation of nature, you’d better make it quantum mechanical.

For simulating these phenomena of interest, often caused by quantum mechanical behavior of electrons and atomic nuclei, it is most natural to develop a quantum computer, a computer that works on the principle of quantum mechanics.

QunaSys is working on quantum algorithm and software R&D, aiming to create innovative novel materials through solving the enigmas of the chemical world using quantum computers.

  • 2024/06/28
    QunaSys Strengthens Collaboration with Xanadu to Contribute to the Development of Japan's Quantum Ecosystem READ MORE


Development for practical application

QunaSys is developing software for practical application of quantum computers.

Today's quantum computers are still under development, and it will take some more time before they can be widely used. In preparation for future practical applications, we are working on software development that will enable quantum computer users to easily utilize the power of quantum computing.

Collaboration research with users

QunaSys values user interaction in order to advance the practical application of quantum computers.

Seeking to determine where quantum computers fit into specific industrial issues, we engage in dialogue with user firms and academia, which bring extensive domain-specific knowledge to the table. Through collaboration research we will overcome obstacles to the practical application of quantum computers.

Creating a quantum computer ecosystem

QunaSys aims to bring quantum computing to society.

In order for quantum computers to be utilized, we need many more users to understand this technology, enable the advanced integration of hardware and software to maximize its power. QunaSys is helping quantum computing industry shape its vision and co-creat this new industry.



Corporate consortium utilizing quantum computers

Learn deeply about quantum computer hardwares and algorithms through lectures and exercises.


Quantum Native Dojo

Self-study materials for beginners

Self-study material that aims to expand the number of researchers and engineers involved in quantum technology.

Quantum Native Dojo


Quantum circuit simulator

Qulacs is a high-speed simulator of quantum circuits for quantum computing research written in C ++, and can be used through the Python interface.

Qulacs: Github


Quantum algorithm benchmark site

Benchmark results obtained by various quantum algorithms.


QunaSys Tech Blog

Quantum Computing Technology Blog

Blogs about quantum algorithm developments written by QunaSys engineer and researchers.

QunaSys Tech Blog


  • IonQ
  • IBM
  • Microsoft
  • PsiQuantum


Using quantum algorithms, industrial applications can be translated into sets of quantum computational operations, described by quantum circuits.

Quantum circuits can be run on any type of universal quantum computing hardware by being converted, or compiled, for the specific gate set supported by the hardware.

Developing quantum algorithm is essential for preparing to take advantage of practical quantum hardware when it becomes available. QunaSys is developing various quantum algorithms and compilers for use in the quantum computers in the future.


QunaSys is a startup company aiming to make quantum computers widely used in society, by conducting research on algorithms that make good use of quantum computers and developing software that enables users to easily use those algorithms.