Focal Point on Quantum computing in Japan

Japan’s ambitious moonshot to develop fault-tolerant computers by 2050 has a clear goal, but it remains uncertain which technology will win out.

By using superconductors, researchers in Japan are seeking to make quantum computers large enough to tackle real-life problems.

Light offers many powerful advantages when it comes to producing quantum computers.

Two very different approaches to realizing quantum computers based on silicon are being investigated under one Japanese programme.

New technologies for trapped ions promise to realize large-scale quantum computers.

A hybrid system of atoms and photons could take today’s quantum computers into a future of tackling real-life problems.

Combining cold atoms with ultrafast lasers promises to revolutionize quantum computing by providing unprecedented speed and scalability.

By bringing together scientists with a broad range of expertise, a high-risk, high-reward programme is seeking to deliver fault-tolerant quantum computers by 2050.

The key components needed for universal quantum computers are being developed in three major projects in Japan.