Latest news at LPNO

6 August 2015

Reconfigurable entanglement circuit (Optica 2, 724 (2015))

Useful time-bin entanglement systems must be able to generate, manipulate, and analyze en- tangled photons on a photonic chip for stable, scalable, and reconfigurable operation. We realiszed the first time-bin entanglement photonic chip that integrates pump time-bin preparation, wavelength demultiplexing, and entanglement analysis. A two-photon interference fringe with 88.4 % visibility is measured (without subtracting any noise), indicating the high performance of the chip. Our approach, based on a silicon nitride photonic circuit, which combines low loss and tight in- tegration features, paves the way for scalable real-world quan- tum information processors.

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20 July 2015

Widest on-chip supercontinuum (Optics express, 23, 19596 (2015))

We have generated ultra-broadband supercontinuum generation in high-confinement Si3N4 integrated optical waveguides. The spectrum extends through the visible (from 470 nm) to the infrared spectral range (2130 nm) comprising a spectral bandwidth wider than 495 THz, which is the widest supercontinuum spectrum generated on a chip.

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