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Integrated Computing Lab
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The lab creates reliable computers that withstand even cosmic rays.
AboutAbout the lab
Building the foundation of computing.
The Integrated Computing Lab (Hashimoto Lab) holds the motto "Creating the foundation of computing."
As society comes to depend on information systems through AI and IoT, systems that handle human lives and property are required to be highly reliable.
The lab pursues the design of reliable high-performance computers, next-generation computing based on new principles, and computing systems that will change our lives.
Key terms
- Soft error
- A temporary error in which particles such as cosmic rays hit a semiconductor and flip a stored bit.
- Homomorphic encryption
- Encryption that allows computations such as addition and multiplication to be performed on data while it remains encrypted.
- Quantum dot
- A tiny semiconductor particle on the scale of nanometers. It confines light and electrons in special ways.
ResearchResearch themes
The lab pursues how to design reliable high-performance computers, how to realize next-generation computing based on new principles, and what kind of computing systems will change our lives.
*Illustrative imageMaking systems resistant to cosmic-ray errors
When particles originating from cosmic rays cause nuclear reactions near memory, soft errors occur that flip bits. The lab clarifies the mechanism through experiments on actual devices and simulation, and develops techniques for evaluating error tolerance.
*Illustrative imageMachine learning inference on encrypted data
The lab develops machine learning inference techniques that use homomorphic encryption, which allows computation while data remains encrypted. This makes it possible to provide inference services that protect the machine learning model and also protect the privacy of the data.
*Illustrative imageComputing with optical devices
The lab builds machine learning systems that exploit the physical nonlinear signal processing of optical devices using quantum dots, aiming for small size and high energy efficiency. It also studies techniques to dynamically adjust computational precision.
*Illustrative imageMillimeter-scale scattered devices
The lab works to establish a new foundational technology in which devices so small they are hard to see, on the order of a cubic millimeter, are scattered in large numbers in living environments, so that people can exchange information with computers without being aware of it.
MembersFaculty
The faculty members of the Integrated Computing Lab are Professor Masanori Hashimoto, Associate Professor Rei Ueno, and Assistant Professor Ryo Shirai.
- ProfessorMasanori Hashimoto
- Associate ProfessorRei Ueno
- Assistant ProfessorRyo Shirai
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “286 AT motherboard” Mister rf / CC BY-SA 4.0 (cropped)
- Making systems resistant to cosmic-ray errors: “Basic design of a microstructured semiconductor neutron detector (MSND)” Douglas McGregor (mcgregorksu) / CC BY-SA 4.0 (cropped)
- Machine learning inference on encrypted data: “Microsoft-SEAL” Bquast / CC BY-SA 4.0 (cropped)
- Computing with optical devices: “QuEra Aquila Optical Layout” QuEra Computing, Inc. / CC BY 4.0 (cropped)
- Millimeter-scale scattered devices: “SMART-R Sampling a Haboob” NOAA / Public domain (cropped)
- Related lab (Semiconductor Physics and Engineering Lab): “Rounded Silicon Carbide Ingot” LaMèreVeille / CC BY-SA 4.0 (cropped)
- Related lab (Intelligent Communication Networks Lab): “NOC-Architel” Mike Reyher / CC BY 2.0 (cropped)
- Related lab (Low-Power Integrated Circuit Design Lab): “Mpw4-top-HD” Zeptobars; Mikhail Svarichevsky / CC BY 3.0 (cropped)
- Related lab (Optical Functional Device Engineering Lab): “Blue led 09 of 10” Renato.pierri / CC BY-SA 4.0 (cropped)
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