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Photonic quantum computers — PennyLane documentation

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Learn how photonic quantum computers work through code

Demos / Quantum Hardware / Photonic quantum computers Photonic quantum computers Alvaro Ballon Published: May 30, 2022 . Last updated: June 15, 2026. To create a functional quantum computer, we need to produce and control a large number of qubits. This feat has proven difficult, although significant progress has been made using trapped ions, superconducting circuits, and many other technologies. Scalability—the ability to put many qubits together—is limited because individual qubits in a multi-qubit system lose their quantum properties quickly. This phenomenon, known as decoherence, happens du

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