Summary of the project

The mission of this research and development project is to agilely adapt to a wide variety of qubit modalities, ranging from superconducting to neutral atoms, and to realize error correction systems as well as compact, low-power qubit control devices.
To achieve this, we will undertake the following research and development items using superconducting qubits. We will also extend the results to other quantum bit schemes.

◇Item 1: Scalable Backend for Error Correction

・Quantum error correction and real-time decoding for logical quantum gate operations

◇Item 2: Advanced Controller (Frontend)

・Compact, low-power controller

◇Item 3: Scalable Classical-Quantum Interface via Optical/Cryo CMOS^*1-2 Integrated Circuits

・Room-temperature/4K communication using optical IF/Cryo CMOS and Cryo PDK^*3

◇Item 4: Qubit Control SoC Using Cryo CMOS^*4

・Control multiple qubits from cryogenic environments

*1 Cryo:Cryogenic Temperature, *2 CMOS:Complementary Metal-Oxide-Semiconductor, *3 PDK:Process Design Kit, *4 SoC: System on a Chip

Milestone by year 2030

Control and Error Correction of 1,000 Physical Superconducting Qubits from Room Temperature
* Establish compact/low-power control and error correction systems working at a room temperature and semiconductor chips integrating optical interfaces and qubit controllers working at a cryogenic temperature.

Performers

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