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Yoshifumi Nakata Lab
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A lab that connects quantum physics and information to explore the limits of information processing from a theoretical perspective.
AboutAbout the lab
Opening a new door to information science through quantum.
The Yoshifumi Nakata Lab studies quantum information science from a theoretical perspective.
Quantum information science merges quantum theory, a fundamental theory of physics, with ideas from information science, and fundamentally explores the possibilities and limits of information processing.
The lab works on quantum information processing, including quantum communication, quantum error correction, and quantum algorithms, as well as fundamental research that views physical phenomena from the perspective of information.
The lab's motto is: "Unravel the quantum through the lens of information, and bring breakthroughs to information technology through the power of the quantum."
Key terms
- Quantum error correction
- A mechanism that encodes quantum information with redundancy to protect it from errors caused by noise
- Quantum algorithm
- A procedure that carries out computation using quantum properties. Some problems can be solved faster than on ordinary computers
- Quantum pseudorandomness
- The idea of creating states close to random using limited operations, instead of achieving perfect randomness
NewsLab news
Yoshifumi Nakata Lab launched in the Department of Computer Science, School of Computing
Paper on a new construction method for decoders published in npj Quantum Inf.
Paper on decoding of quantum codes published in Phys. Rev. Res.
Paper on information recovery in Hamiltonian systems published as a Letter in Phys. Rev. Res.
ResearchResearch themes
The lab reinterprets quantum theory as a "theory of handling information" and theoretically explores the possibilities and limits of quantum information processing. It works on themes at the intersection of information and quantum, such as quantum communication, quantum error correction, quantum algorithms, and the behavior of information in quantum many-body systems.
*Illustrative imageQuantum pseudorandomness
The lab investigates how closely ideal quantum randomness can be approximated under limited operations and computational resources. It works to clarify the quantum dynamics that efficiently generate such randomness and to establish theoretical methods for verifying its properties.
*Illustrative imageQuantum communication and quantum error correction
The lab studies quantum error correction, which protects quantum information from errors. It asks why random quantum codes, which incorporate randomness, are effective, and also works on stabilizer codes, which aim to combine theoretical performance guarantees with practicality.
*Illustrative imageQuantum algorithms and computational complexity
The lab studies algorithms that generate and verify quantum pseudorandomness, and algorithms that decode random quantum codes. It also estimates the computational cost required to run them, aiming to achieve both implementability and theoretical understanding.
*Illustrative imagePhysical phenomena viewed through information
The lab regards error correction, chaos, and thermalization as different faces, in information and in physics, of the same essence: unpredictable dynamics. Using concepts from information processing as a guide, it also works on research that reinterprets physical phenomena.
MembersFaculty
The Yoshifumi Nakata Lab consists of faculty members and undergraduate students.As of 2026
- Associate ProfessorYoshifumi Yoshifumi NakataPublications ↗
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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: “Dilution Fridge with Quantum Processors Enclosed 008 8K” OJB Quantum / CC BY 4.0 (cropped)
- Quantum pseudorandomness: “Shuffling small playing cards ( )” Paul Huxley / CC BY 2.0 (cropped)
- Quantum communication and quantum error correction: “IBM Quantum System One” OJB Quantum / CC BY 4.0 (cropped)
- Quantum algorithms and computational complexity: “Wire Bonded Superconducting Quantum Chip with 6 Transmons 002” OJB Quantum / CC BY 4.0 (cropped)
- Physical phenomena viewed through information: “Binary Black Hole” Jeremy Schnittman / CC BY 4.0 (cropped)
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- Related lab (宮崎研究室): “CSC1941” Alexkisi / CC BY-SA 3.0 (cropped)
- Related lab (石田研究室): “4xhe pinnatoxin pentamer” Opabinia regalis / CC BY-SA 4.0 (cropped)
- Related lab (柳澤研究室): “1ppr peridinin chlorophyll protein trimer” Opabinia regalis / CC BY-SA 4.0 (cropped)
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