Publications (11)
True random numbers from amplified quantum vacuum
M. Jofre, M. Curty, F. Steinlechner +4
Random numbers are essential for applications ranging from secure communications to numerical simulation and quantitative finance. Algorithms can rapidly produce pseudo-random outc…
Ultra-fast quantum randomness generation by accelerated phase diffusion in a pulsed laser diode
C. Abellan, W. Amaya, M. Jofre +5
We demonstrate a high bit-rate quantum random number generator by interferometric detection of phase diffusion in a gain-switched DFB laser diode. Gain switching at few-GHz frequen…
Emergence of structural anisotropy in Optical Glasses treated to support Second Harmonic Generation
C. Cabrillo, G. J. Cuello, P. Garcia-Fernandez +5
Structural alterations in v-SiO2 induced by "thermal poling", a treatment which makes the glass able to double the frequency of an impinging infrared light, are revealed by neutron…
Fast beam steering with full polarization control using a galvanometric optical scanner and polarization controller
M. Jofre, G. Anzolin, F. Steinlechner +4
Optical beam steering is a key element in many industrial and scientific applications like in material processing, information technologies, medical imaging and laser display. Even…
Fast optical source for quantum key distribution based on semiconductor optical amplifiers
M. Jofre, A. Gardelein, G. Anzolin +16
A novel integrated optical source capable of emitting faint pulses with different polarization states and with different intensity levels at 100 MHz has been developed. The source…
100 MHz Amplitude and Polarization Modulated Optical Source for Free-Space Quantum Key Distribution at 850 nm
M. Jofre, A. Gardelein, G. Anzolin +4
We report on an integrated photonic transmitter of up to 100 MHz repetition rate, which emits pulses centered at 850 nm with arbitrary amplitude and polarization. The source is sui…
Enhancement of the sensitivity of a temperature sensor based on Fiber Bragg Gratings via weak value amplification
L. J. Salazar-Serrano, D. Barrera, W. Amaya +3
We present a proof-of-concept experiment aimed at increasing the sensitivity of temperature sensors implemented with Fiber Bragg gratings by making use of a weak value amplificatio…
CMOS based image cytometry for detection of phytoplankton in ballast water
J. M. Pérez, M. Jofre, P. MartÃnez +5
We introduce an image cytometer (I-CYT) for the analysis of phytoplankton in fresh and marine water environments. A linear quantification of cell numbers was observed covering seve…
Evidence of Microscopic-Scale Modifications in Optical Glasses Supporting Second Harmonic Generation
C. Cabrillo, G. J. Cuello, P. Garcia-Fernandez +5
We explore, by means of inelastic neutron scattering, the extent of changes in dynamic correlations induced by thermal poling of vitreous . The measured vibrational density…
Continuous-Variable Quantum Key Distribution over 15 km Multi-Core Fiber
S. Sarmiento, S. Etcheverry, J. Aldama +8
The secure transfer of information is critical for the ever-increasing demands of the digital world. Continuous-variable quantum key distribution (CV-QKD) is a technology that can…
Experimental loophole-free violation of a Bell inequality using entangled electron spins separated by 1.3 km
B. Hensen, H. Bernien, A. E. Dréau +16
For more than 80 years, the counterintuitive predictions of quantum theory have stimulated debate about the nature of reality. In his seminal work, John Bell proved that no theory…