Alberto Mura

TL;DR: It is found that ordinary submarine telecommunication cables can be used to detect earthquakes, and existing telecommunication optical fiber cables can detect seismic events when combined with state-of-the-art frequency metrology techniques by using the fiber itself as the sensing element.

TL;DR: In this paper, a 642-km coherent optical fiber link was used for frequency dissemination through a single-input-single-output (SISO) link and the frequency instability was evaluated at 1,000 s in terms of Allan deviation on a 5mHz measurement bandwidth.

TL;DR: In this paper, the authors reported on the successful distribution of polarization-entangled photon pairs between Malta and Sicily over 96 km of submarine optical telecommunications fiber, with a polarization visibility above 90%.

TL;DR: An experiment in which, for the first time, the clock reference is delivered from a National Metrology Institute to a radio telescope using a coherent fibre link 550 km long, encouraging further investigation of the ultimate VLBI performances achievable using fibre dissemination at the highest precision of state-of-the-art atomic clocks.

TL;DR: In this paper, a 642 km coherent optical fiber link was proposed to improve the frequency references used in radio-astronomy and precision measurements in atomic physics, which achieved a resolution of 3e-19 at 1000 s on the frequency transfer.