Institucio Catalana De Recerca I Estudis Avancats

Fundacio Institut De Ciencies Fotoniques

Universidade De Vigo

Fundacio Institute De Ciencies Fotoniques

Marc Jofre Cruanyes

Valerio Pruneri

Marcos Curty Alonso

Mitchel Morgan

Pedro Antonio Martïnez Cordero

Apparatus for measuring light scattering of a sample comprising a light beam source, means for collimating the beam and making it impinge on the sample in a perpendicular direction, at least one light sensor, and at least one spatial filter between the sample and the optical sensor, provided with two apertures, means for measuring the total power reaching the sensor and means for measuring the power of beams with a low k vector after the beam traverses the filter. The invention provides thus a simplified, portable and compact device for measuring different parameters like haze, turbidity, etc. can be built, for any sample and without the need of changing detectors.

Apparatus for measuring light scattering

The invention is based on a process and system for producing random numbers by means of a quantum random number generator where the method comprises the steps of operating a laser in single mode and high modulation bandwidth by means of an electrical pulse driver, transforming the phase randomized optical pulses produced before in optical pulses with random amplitude and detecting the resulting random amplitude signals by means of a fast photodiode. The numbers thus produced are truly random.

Ultrafast quantum random number generation process and system therefore

Growing community of inventors

Castelldefels, Spain

Marc Jofre Cruanyes