Scientists have unveiled a new approach to powering quantum computers using quantum batteries — a breakthrough that could make future computers faster, more reliable and more energy efficient.
Quantum computers rely on the rules of quantum physics to solve problems that could transform computing, medicine, energy, finance, communications and many other fields in the years ahead. But sustaining their delicate quantum states typically requires room-sized, energy-intensive cryogenic cooling systems, as well as a system of room-temperature electronics.
These infrastructure and energy requirements remain the biggest barriers to scaling up quantum computers, limiting their size and processing power, restricting their applications and slowing their path to market. So, in a new study co-authored by Doctor James Quach and published in Physical Review X, a team from CSIRO, University of Queensland and Okinawa Institute of Science and Technology has theoretically shown how tiny quantum batteries could power a quantum computer – increasing the qubits fourfold.
Quantum batteries are devices that store energy using light, allowing them to recharge simply by being exposed to it. When integrated into a quantum computer, they can be continually recharged by the machine’s own components. In this system, the battery becomes linked with the computer’s quantum processing units through a phenomenon known as entanglement, creating a shared quantum connection.
“While quantum batteries remain an emerging technology and further development is required, this approach creates exciting possibilities for the future of quantum computing,” said Dr Quach.
