A Canadian startup, Xanadu, has developed a new photonic quantum computer named Aurora. This machine uses light to encode information, differing from the superconducting circuits used by competitors like Google and IBM. Aurora’s modular design allows for scalability, with each unit fitting into a standard server rack. Currently, Aurora has 12 qubits, but Xanadu aims to expand this to a million qubits by 2029, envisioning a quantum data center. The company’s approach involves combining and recombining laser beams on multiple chips, with the final photon count in each beam representing the answer to an algorithm. Despite its modest qubit count, experts believe photonic quantum computers have unique advantages, such as less sensitivity to environmental noise and easier networking capabilities. However, challenges remain, including the need for improved photon quality to reduce information loss and the development of error correction capabilities.
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