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Highlights
LQNO at Swiss NanoConvention 2025
LQNO research group participated in the Swiss NanoConvention 2025 conference held in Brugg AG, presenting two posters on the fabrication of ultra-thin diamond membranes for photonics and quantum sensing, and on entangled photon-pair generation enhanced by 2D heterostructures. Our showcases the advanced capabilities in microfabrication available to research groups in Swiss institutions, and their applications in (…)
Mode-Specific Coupling of Nanoparticle-on-Mirror Cavities with Cylindrical Vector Beams
We demonstrate selective excitation of nanocavity modes controlled by the polarization and frequency of a laser beam. More precisely, we record confocal maps of Raman scattering excited by cylindrical vector beams, which are compared to the known excitation near-field patterns. Our measurements reveal the transverse vs. longitudinal polarization of the excited antenna mode and how (…)
Measurement-induced collective vibrational quantum coherence under spontaneous Raman scattering in a liquid
Spontaneous Raman scattering is classically understood as an incoherent process. Here, we evidence that a macroscopic quantum coherence among billions of vibrating molecules is generated when detecting a single Stokes photon collected into a single-mode fiber. Our results show that at the quantum level spontaneous Raman scattering is an intrinsically collective effect, even in the (…)
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