Science, Space and Technology News 2024
Researchers have made a pivotal advance in quantum technology by developing integrated photonics that enable the control and manipulation of light on silicon chips. This innovation facilitates ultra-secure communications and enhances quantum computing capabilities. Credit: SciTechDaily.com
Integrated photonics, the manipulation of light within tiny circuits on silicon chips, has long held promise for quantum applications due to its scalability and compatibility with existing telecommunications infrastructure. This allows for the parallelization and independent control of 34 single qubit-gates using just three standard electro-optic devices. The device can efficiently generate frequency-bin entangledThe key innovation lies in their ability to exploit these narrow frequency separations to create and control quantum states. Using integrated ring resonators, they successfully generated frequency-entangled states through a process known as spontaneous four-wave mixing.
To validate their approach, the team performed experiments at C2N, showing quantum state tomography on 17 pairs of maximally entangled qubits across different frequency bins. This detailed characterization confirmed the fidelity and coherence of their quantum states, marking a significant step towards practical quantum computing.
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