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First on-chip photonic qubit enables GKP states for error correction at room temperature

Xanadu has achieved a significant milestone in the development of scalable quantum hardware by generating error-resistant photonic qubits on an integrated chip platform. A foundational result in Xanadu’s roadmap, this first-ever demonstration of such qubits on a chip is published in Nature.

This advance builds on Xanadu’s recent announcement of the Aurora system, which demonstrated—for the first time—all key components required to build a modular, networked, and scalable photonic quantum computer. With this latest demonstration of robust generation using silicon-based photonic chips, Xanadu further strengthens the scalability pillar of its architecture.

The quantum states produced in this experiment, known as Gottesman–Kitaev–Preskill (GKP) states, consist of superpositions of many photons to encode information in an error-resistant manner—an essential requirement for future fault-tolerant quantum computers. These states allow to be performed using deterministic, room-temperature-compatible techniques, and they are uniquely well-suited for networking across chips using standard fiber connections.

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