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Yamasaki Lab
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The lab develops the theory of quantum information and quantum computation for the era of quantum computers.
AboutAbout the lab
Building the theoretical foundations for the era of quantum information processing
The Yamasaki Lab studies the foundational theory of quantum information and quantum computation, and its applications.
A quantum computer processes information using the principles of quantum mechanics, and is fundamentally different from conventional computers.
The lab seeks to clarify how quantum computers can be used and realized, as well as their optimal performance and fundamental limits.
The lab aims to build a comprehensive theoretical foundation for the era of quantum information processing.
Key terms
- qubit
- The basic unit of information in a quantum computer, which can take a superposition of 0 and 1
- fault-tolerant quantum computation
- A method of carrying out computation correctly by using codes to protect quantum information, which is easily corrupted by noise
- entanglement
- A property unique to quantum mechanics in which distant quantum systems have strong correlations that cannot be explained by describing each system individually
NewsLab news
A student received the Best Student Poster Award at the 26th Asian Quantum Information Science Conference
Associate Professor Yamasaki received the Information Theory Society Paper Award at ISIT 2026
ResearchResearch themes
The lab studies the foundational theory of quantum information science and its applications. Built on three pillars, namely quantum computation and quantum machine learning, quantum error correction, and quantum information, the lab develops theory that connects advances in quantum technology with the future information society.
*Illustrative imageQuantum Computation and Quantum Machine Learning
Building on the problems that quantum computation handles well, the lab develops and theoretically analyzes quantum algorithms that speed up machine learning. It also uses computational complexity theory to clarify the advantages of quantum computation, and develops classical numerical methods that improve the performance of quantum algorithms.
*Illustrative imageQuantum Error Correction
The lab studies the theory of fault-tolerant quantum computation, which performs computation while protecting qubits that are vulnerable to noise. Its work includes methods that greatly reduce the number of qubits and the amount of time required, quantum computer architecture, and the theory of continuous-variable quantum codes.
*Illustrative imageQuantum Information
The lab studies quantum resource theory, which treats uniquely quantum properties such as entanglement as resources for computation. It also works on the theory of the quantum internet and distributed quantum information processing, benchmarking methods for quantum devices, and the foundations of quantum mechanics.
MembersFaculty
- Associate ProfessorHayata YamasakiPublications ↗
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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: “Quantum Computer with Dispersive Background 002” OJB Quantum / CC BY 4.0 (cropped)
- Quantum Computation and Quantum Machine Learning: “Q fourier nqubits” Trenar3 / CC BY-SA 4.0 (cropped)
- Quantum Error Correction: “ToricCodeLattice” Woottonjames / CC BY 3.0 (cropped)
- Quantum Information: “D-L- Glucose farbig V1” Vectorization: Alhadis / Public domain (cropped)
- Related lab (Miyao Lab): “Rosetta Stone” Hans Hillewaert / CC BY-SA 4.0 (cropped)
- Related lab (Yanaka Lab): “Bookshelves and interior of the library of the Academy for Judiciary” Szeronine / CC BY 4.0 (cropped)
- Related lab (Ma Lab): “Unmarked Nissan Rogue - Possible Test Autonomous Vehicle - San Francisco, May 2025 04” 9yz / CC BY 4.0 (cropped)
- Related lab (Sugiyama-Yokoya-Ishida Lab): “T-SNE Embedding of MNIST” Kyle McDonald / CC BY 2.0 (cropped)
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