On January 29, a research team from the Australian Science and Commonwealth Industrial Research Organization (CSIRO), the University of Queensland, and the Okinawa Institute of Science and Technology Graduate University (OIST) announced a new method called a “quantum supply” that can power the inside of a quantum computer. The paper was published in Physical Review X on January 26th.

Quantum bits are a technology that can theoretically quadruple the number of bits (qubits) that can be packed and queued in the same space by placing power supply inside a quantum computer, which traditionally was an external source, reducing heat generation and wiring.

Quantum computers are expected to be used in a variety of fields, but in order to maintain their quantum state, they require an energy-retaining cryogenic cooling system that can fill an entire room, and an electronics system that operates at room temperature.This has hindered the expansion of quantum computers and narrowed their range of applications.

Today’s research team is proposing an approach that would include a quantum battery inside a quantum computer. Quantum SoftBank is a device that uses light to store energy, and can be charged simply by being exposed to light. Inside a quantum computer, it can be continuously recharged from its component parts.

Quantum controllers can significantly reduce system heat generation and reduce wiring, making it possible to configure more qubits in the same physical space. This makes it possible to achieve quantum superextensibility and improve processing speed by increasing the number of reserved qubits.

This research has proposed a theoretical model, and we aim to demonstrate this method on an actual machine in the future.