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Quantum entanglement with acousto-optic modulators: 2-photon beatings and Bell experiments with moving beamsplitters
Andre Stefanov, Hugo Zbinden, Antoine Suarez +1
We present an experiment testing quantum correlations with frequency shifted photons. We test Bell inequality with 2-photon interferometry where we replace the beamsplitters by aco…
Quantum interference with photon pairs created in spatially separated sources
H. de Riedmatten, I. Marcikic, W. Tittel +2
We report on a quantum interference experiment to probe the coherence between two photons coming from non degenerate photon pairs at telecom wavelength created in spatially separat…
Femtosecond Time-Bin Entangled Qubits for Quantum Communication
Ivan Marcikic, Hugues de Riedmatten, Wolfgang Tittel +3
We create pairs of non-degenerate time-bin entangled photons at telecom wavelengths with ultra-short pump pulses. Entanglement is shown by performing Bell kind tests of the Franson…
Creating high dimensional time-bin entanglement using mode-locked lasers
Hugues de Riedmatten, Ivan Marcikic, Hugo Zbinden +1
We present a new scheme to generate high dimensional entanglement between two photonic systems. The idea is based on parametric down conversion with a sequence of pump pulses gener…
Quantum Key Distribution over 67 km with a plug & play system
D. Stucki, N. Gisin, O. Guinnard +2
We present a fibre-optical quantum key distribution system. It works at 1550nm and is based on the plug & play setup. We tested the stability under field conditions using aerial an…
Quantum cloning with an optical fiber amplifier
Sylvain Fasel, Nicolas Gisin, Gregoire Ribordy +2
It has been shown theoretically that a light amplifier working on the physical principle of stimulated emission should achieve optimal quantum cloning of the polarization state of…