Monday, 6th December 2021
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Fujitsu and Osaka University's quantum collaboration

Osaka University and Fujitsu established the Fujitsu Quantum Computing Joint Research Division as a collaborative research program of the Center for Quantum Information and Quantum Biology (QIQB) of Osaka University.

Osaka University and Fujitsu Limited have established the Fujitsu Quantum Computing Joint Research Division as a collaborative research division at the Center for Quantum Information and Quantum Biology (hereinafter QIQB) of Osaka University.


The newly-established research division will focus on the development of foundational technologies for fault-tolerant quantum computers, which are able to perform accurate calculations while correcting errors that occur in quantum bits (qubits). These efforts will draw on the respective strengths of the two partners, combining QIQB's advanced quantum error correction and quantum software technologies with Fujitsu's applied knowledge in computing and quantum technologies.


More specifically, QIQB and Fujitsu aim to develop quantum software for fault-tolerant quantum computers with up to several thousand qubits as well as technologies to verify its error correcting operations.


Going forward, the two partners will strengthen their cooperation in R&D towards the realization of fault-tolerant quantum computing technologies to innovate solutions to complex societal problems through quantum technology.


Background


Quantum computers, which make use of the principles of quantum mechanics including quantum superposition states and quantum entanglement (1), offer the potential to one day revolutionize computing, significantly exceeding the capabilities of conventional computing technologies to perform high-speed calculations.


Fault-tolerant quantum computing, capable of accurate and large-scale high-speed calculations using error correction codes, may become a key technology especially in the fields of drug discovery and finance, which require a technology able to solve complex and large-scale problems at high speed.


In March 2020, Osaka University established QIQB in order to promote quantum information and quantum biology research, focusing on research in a wide range of fields ranging from quantum computing, quantum information fusion, quantum information devices, quantum communications and security, quantum measurement and sensing, and quantum biology.


QIQB has also been chosen as the main center for quantum software research in the field of quantum technology of the COI-NEXT program (2) of the Japan Science and Technology Agency (JST) and thus plays an important role in Japan's strategy for quantum technology innovation.

Cooperating with domestic and overseas research institutes, Fujitsu has been engaged in full-scale research and development of quantum computing since 2020, aiming to further improve the performance of computing technologies.


Leveraging its quantum-inspired computing (3) solution "Digital Annealer", which is designed to solve large-scale combinatorial optimization problems, Fujitsu is providing customers solutions in various fields like drug discovery and logistics.


In October 2020, Fujitsu started collaborative research (4) with Osaka University on quantum error correction. The establishment of the "Fujitsu Quantum Computing Joint Research Unit" will further strengthen R&D in fault-tolerant quantum computer systems.


Outline of the Joint Research

1. Name: Fujitsu Quantum Computing Joint Research Division

2. Location: Center for Quantum Information and Quantum Biology (QIQB), International Advanced Research Institute (IARI), Osaka University (Toyonaka City, Osaka Prefecture)

3. Research Period: October 1, 2021 to March 31, 2024

4. Research Contents: R&D of Quantum Software for fault-tolerant quantum computers


*Assuming a quantum computer with a scale of several thousand qubits, the joint division will research and develop an error correction algorithm able to restore the original information from faulty qubits, as well as technologies to evaluate the performance of this algorithm.

*In order to perform quantum computation using logical qubits (5) generated through quantum error correction codes, the joint division will focus on the R&D and implementation of a set of software solutions required from program input to the result output.


With regard to future practical applications of this technology, the division will furthermore verify the operation of these solutions using a virtual machine environment to evaluate the effects of noise add up.


Roles and Responsibilities


Osaka University

- Contribution to further R&D in the field of quantum error correction technology on a scale of several thousand qubits based on its knowledge of quantum error correction technology

- Development of a set of software necessary for performing quantum computation using logical qubits and verify its application in a virtual machine


Fujitsu

- Generation of quantum error correction algorithms for quantum computers on a scale of several thousand qubits based on its expertise in computing

- Development of a set of software necessary for performing quantum computation using logical qubits; application of the software to a virtual machine and verification of its operation


Future Plans


In order to contribute to the further development of quantum computing science and technology, Osaka University and Fujitsu will strengthen their cooperation with a variety of research institutions and companies. Through the practical application of the results of this joint research, the partners aim to contribute to an early practical application of quantum computing with the potential to drive innovations and create a sustainable society.


Osaka University and Fujitsu will also collaborate with related industries and the academia to support the training of new human resources in the field of quantum technology.




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