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Nakamura Lab
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A lab that takes on quantum information science by freely controlling qubits in superconducting circuits.
AboutAbout the lab
Full control over quantum degrees of freedom
The Nakamura Lab approaches quantum information science, which aims at new information processing, communication, and high-precision measurement based on the principles of quantum mechanics, from both physics and engineering perspectives.
At the core of its work is research on operating electrical circuits made of superconductors at extremely low temperatures, and controlling and observing them as qubits.
Using these superconducting quantum circuits as a tool, the lab is also working on manipulating the quantum states of other physical systems, such as the vibrations of nanomechanical devices and magnons in ferromagnets.
Key terms
- Qubit
- The unit of information used in quantum computers, which can be in a superposition of 0 and 1
- Superconductivity
- A phenomenon in which certain metals lose all electrical resistance when cooled to extremely low temperatures
- Magnon
- In a magnet (ferromagnet), a wave-like oscillation in which the directions of the electron spins move together in a coordinated way
ResearchResearch themes
Electrical circuits made of superconductors have no electrical resistance, and when operated properly at extremely low temperatures, an on-chip circuit behaves as a macroscopic artificial quantum mechanical system. The lab realizes and controls qubits with these superconducting quantum circuits, and uses them as a tool to freely manipulate the quantum states of other physical systems.
*Illustrative imageControl of Superconducting Qubits
The lab builds qubits from superconducting circuits that use the Josephson effect, and controls and reads out their states with microwave electrical signals. It also works on improving qubit properties and increasing the level of integration toward quantum computers.
*Illustrative imageHybrid Quantum Systems
The lab transfers quantum states between superconducting quantum circuits and other physical systems, aiming at quantum memories and optical interfaces for communication. It pursues this using the vibrations of nanomechanical devices and magnons.
MembersFaculty
The Nakamura Lab consists of faculty and staff, visiting members, academic specialist staff, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorYasunobu Nakamura
VoicesStudent voices
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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: “6 Transmon Superconducting Quantum Processor without Cheesing 013” OJB Quantum / CC BY 4.0 (cropped)
- Control of Superconducting Qubits: “Cross-Shaped Transmon with 2 Josephson Junctions” OJB Quantum / CC BY 4.0 (cropped)
- Hybrid Quantum Systems: “Wiki-YIG” Krizu / CC BY-SA 3.0 (cropped)
- Related lab (芦原研究室): “Femtosecond Laser and Pulse Compressor - Optics Lab - INRIM” Giorgio Brida from Torino, Italy / CC BY 2.0 (cropped)
- Related lab (福谷研究室): “Photoemission laboratory” Food95 / CC BY-SA 4.0 (cropped)
- Related lab (山本研究室): “Dilution Fridge with Quantum Processors Enclosed 008 8K” OJB Quantum / CC BY 4.0 (cropped)
- Related lab (米田淳研究室): “Dilution Fridge 009 8K” OJB Quantum / CC BY 4.0 (cropped)
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