Abstract: The invention relates to an optically-based digital-to-analogue converter comprising A first pulse shaper, and a second pulse shaper, A first combiner, with a first input for a signal from the first pulse shaper, and a second input for a further signal, A second combiner, with a first input for a signal from the second pulse shaper, and a second input for the further signal, A first quantum pulse shaper, and a second quantum pulse shaper, Whereby the first quantum pulse shaper receives the output signal of the first combiner in the course of operation, and the second quantum pulse shaper receives the output signal of the second combiner in the course of operation, A third combiner, which combines the output signals of the first quantum pulse shaper and the second quantum pulse shaper in the course of operation, An evaluation unit, which evaluates the output signal of the third combiner.

Abstract: The invention relates to an optically-based analogue-to-digital converter comprising: a first combiner with a first input for an optical reference signal, and a second input for an input signal that is to be digitised, a second combiner with a first input for a pulsed laser signal, and a second input, which is connected to the output of the first combiner, an evaluation unit, which evaluates the output signal of the second combiner s.

Abstract: A de-multiplexer (1) for separating two co-propagating modes of electromagnetic radiation includes a volume (2) having a path therethrough for receiving electromagnetic radiation, an input (8) for directing two co-propagating modes of electromagnetic radiation to be incident upon the volume, a control source (12) of electromagnetic radiation arranged to generate a time-dependent control field. The volume is arranged and the time-dependent control field is shaped such that, when the two co-propagating modes of electromagnetic radiation and the time-dependent control field are incident upon the volume contemporaneously, the time-dependent control field causes the volume to accept one of the two modes of electromagnetic radiation onto a mode of the volume without any parametric non-linear optical interaction taking place and to reflect or transmit the other of the two modes of electromagnetic radiation, so to spatially and/or temporally separate the two modes of electromagnetic radiation from each other.

Abstract: A de-multiplexer (1) for separating two co-propagating modes of electromagnetic radiation includes a volume (2) having a path therethrough for receiving electromagnetic radiation, an input (8) for directing two co-propagating modes of electromagnetic radiation to be incident upon the volume, a control source (12) of electromagnetic radiation arranged to generate a time-dependent control field. The volume is arranged and the time-dependent control field is shaped such that, when the two co-propagating modes of electromagnetic radiation and the time-dependent control field are incident upon the volume contemporaneously, the time-dependent control field causes the volume to accept one of the two modes of electromagnetic radiation onto a mode of the volume without any parametric non-linear optical interaction taking place and to reflect or transmit the other of the two modes of electromagnetic radiation, so to spatially and/or temporally separate the two modes of electromagnetic radiation from each other.