• Archer has shown it can electrically control its quantum device, enabling accurate readout of quantum information
• This marks a major step toward demonstrating a single qubit
• The work was completed using Archer's quantum carbon films, designed for reliable manufacturing with standard chip-fabrication methods

Archer Materials Limited ('Archer', the 'Company', 'ASX: AXE'), a quantum company developing technologies in computing, sensing, and medical diagnostics industries, has achieved a key milestone on its roadmap to qubit demonstration by showing electrical gating within its quantum single electron transistor (SET) devices, boosting the 12CQ's readout (the output of quantum information) capabilities. The work builds on the SET device previously reported (ASX announcement 30 October 2024) using Archer's carbon nano onions. Demonstrating electrical gating using these materials significantly de-risks the readout pathway for Archer's quantum carbon films. Importantly, the carbon films are being developed to be manufacturable and compatible with conventional chip making processes and positioning the technology for future scalability. The electrical measurements were performed under a range of temperatures. These varied conditions allowed the Archer team to characterise a large number of SET devices, gain insight relevant to the scaled manufacturing of the devices, confirmation of reproducible device behaviour and to gain a very accurate understanding of the quantum properties of key devices. This level of characterisation is essential for progressing toward qubit demonstration and for future engineering of the carbon films at scale. Archer is pursuing multiple methods, two of which are via a SET and the electrical detected magnetic resonance (EDMR) process. Archer's SET devices allow to isolate a single electron in the qubit. Once that is achieved, the spin state of the electron is readout electronically. Work is currently underway to operate our SET devices in magnetic fields to demonstrate that the spin state of the electron on the qubit can be read out. Initial testing should be completed by the end of the year.

Archer is developing the qubit technology on carbon nano onions and films. By using carbon film materials, the company can bolster the manufacturability of its quantum technology, as films allow for better integration with conventional chip making processes.