Outline
![Lab Lab](../lde9n20000008mfu-img/Lab.jpg)
Novel Superconducting Qubit Materials and Designs
We are making superconducting qubit with oxide-free tunnel barrier to minimize defects.
Ferromagnetic Josephson junctions allow us to eliminate the need for magnetic fields to control flux qubits.
![](../lde9n20000008mfu-img/MQP_Superconducting_Qubit.jpg)
Quantum Optimal Control Theory
We are using numerical optimization methods to design control pulses that can maximize the speed of operating superconducting qubits.
![quantum control quantum control](../lde9n20000008mfu-img/MQPWebsiteQuantumControlFigure.jpg)
Circuit QED
By replacing an atom with a superconducting artificial atom, and replacing a microwave cavity with an electronic resonator circuit, we are doing research to understand interaction between light and matter at a single photon level.
![cavity QED and circuit QED cavity QED and circuit QED](../lde9n20000008mfu-img/Cavity_QED_and_circuit_QED_English.jpg)
![Superconducting Qubit Oscillator Circuit Superconducting Qubit Oscillator Circuit](../lde9n20000008mfu-img/MQP_Superconducting_qubit_oscillator_circuit.jpg)
Hybrid Quantum Systems
We are trying to create unique functions at a quantum level by making coherent coupling of different quantum systems.
![hybrid quantum system hybrid quantum system](../lde9n20000008mfu-img/Hybrid_Quantum_Systems_v2.jpg)
Externally funded projects
- Moonshot: Developing qubit based on epitaxial junction
April 2021 - March 2025 (5 years)
Principal Investigator: Dr. Fumiki Yoshihara - Q-LEAP: R&D and application of quantum software by intelligent quantum system design
August 2020 - March 2029 (about 10 years)
Principal Investigator: Dr. Kouichi Semba
Past projects
- Japan Society for the Promotion of Science, Grants-in-Aid for scientific research S(KAKENHI)
Title of Project: “Quantum Physics with Macroscopic Quantum Systems” 2013-2017
Principal Investigator: Dr. Kouichi Semba - JST-CREST: Creation of an innovative quantum technology platform based on the advanced control of quantum states; October 2017 - March 2023 (5.5 years)
Title of Project: Creation and control of superconducting quantum meta-materials
Principal Investigator: Dr. Kouichi Semba