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- Istituto di Fotonica e NanotecnologieIT287 papers
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4 papers · 2 filters
GHz QKD at telecom wavelengths using up-conversion detectors
R. T. Thew, S. Tanzilli, L. Krainer +6
We have developed a hybrid single photon detection scheme for telecom wavelengths based on nonlinear sum-frequency generation and silicon single-photon avalanche diodes (SPADs). Th…
Entropic bounds and continual measurements
Alberto Barchielli, Giancarlo Lupieri
Some bounds on the entropic informational quantities related to a quantum continual measurement are obtained and the time dependencies of these quantities are studied.
Observation of dynamic localization in periodically-curved waveguide arrays
S. Longhi, M. Marangoni, M. Lobino +4
We report on a direct experimental observation of dynamic localization (DL) of light in sinusoidally-curved Lithium-Niobate waveguide arrays which provides the optical analog of DL…
Quantum measurements and entropic bounds on information transmission
Alberto Barchielli, Giancarlo Lupieri
While a positive operator valued measure gives the probabilities in a quantum measurement, an instrument gives both the probabilities and the a posteriori states. By interpreting t…