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Quantum Leap in Photonic Qubits - A Revolution in Quantum Computing

Reliable Information Technology, Inc. (RIT Company)

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发布日期: 2024年1月4日

In a groundbreaking development, a group of German-Dutch experts has successfully created the first-ever source of entangled photons on a chip, marking a significant advancement in quantum computing.

Professor Michael Kues, the director of the Institute of Photonics at Leibniz Universit?t Hannover, underscores the impact of this breakthrough on real-world quantum processors. They achieved repeatability, long-term stability, scalability, and potential mass production by reducing the source size over 1000 times—critical conditions for practical quantum computing applications.

Traditionally, quantum computers relied on external, bulky laser systems with limited utility for light sources. The team addressed this challenge by introducing a new architecture and systems for integrating components on an integrated circuit.

The user-friendly integrated circuit functions as seamlessly as any other chip. To generate entangled photons, users simply mount and turn on the system, requiring no special expertise. The creators foresee this source becoming a standard component in every quantum optical processor.

To overcome integration challenges of lasers, a filter, and a cavity on a single chip, the scientists utilized a hybrid approach. They placed an indium phosphide laser, a cavity, and a silicon nitride filter on a chip, resulting in the spontaneous creation of entangled photons through a non-linear process in the laser field.

Professor Kues asserts that the achieved performance and quality position their chip for integration into quantum computers or the quantum internet, marking a significant stride toward the future of quantum technology.

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