86 citations · 86 across the 1 of their papers we have counts for
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High resolution optical time domain reflectometer based on 1.55um up-conversion photon-counting module
Matthieu Legre, Rob Thew, Hugo Zbinden +1
We implement a photon-counting Optical Time Domain Reflectometer (OTDR) at 1.55um which exhibits a high 2-point resolution and a high accuracy. It is based on a low temporal-jitter…
Implementation of continuous variable quantum cryptography in optical fibres using a go-&-return configuration
Matthieu Legre, Hugo Zbinden, Nicolas Gisin
We demonstrate an implementation of quantum key distribution with continuous variables based on a go-&-return configuration over distances up to 14km. This configuration leads to s…
Direct measurement of superluminal group velocity and of signal velocity in an optical fiber
Nicolas Brunner, Valerio Scarani, Mark Wegmuller +2
We present an easy way of observing superluminal group velocities using a birefringent optical fiber and other standard devices. In the theoretical analysis, we show that the optic…
Distribution of time-bin qubits over 50 km of optical fiber
I. Marcikic, H. de Riedmatten, W. Tittel +3
We report experimental distribution of time-bin entangled qubits over 50 km of optical fibers. Using actively stabilized preparation and measurement devices we demonstrate violatio…
Quantum measurement of the degree of polarization of a light beam
M. Legre, M. Wegmuller, N. Gisin
We demonstrate a coherent quantum measurement for the determination of the degree of polarization (DOP). This method allows to measure the DOP in the presence of fast polarization…