A team led by the Royal Melbourne Institute of Technology's Alberto Peruzzo has developed a topological photonic chip to process quantum information, a breakthrough that could serve as a more robust option for scalable quantum computers. In addition, this research could lead to the development of new materials, next-generation computers, and deeper understandings of fundamental science.
The researchers used topological photonics to fabricate a chip with a "beamsplitter," creating a high precision photonic quantum gate. The team used the photonic chip to demonstrate that topological states can undergo high-fidelity quantum interference. Demonstrating high-fidelity quantum interference is a precursor to transmitting accurate data using single photons for quantum communications. "Topological photonics have the advantage of not requiring strong magnetic fields, and feature intrinsically high-coherence, room-temperature operation, and easy manipulation," Peruzzo says.
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