… In conclusion, we have demonstrated a frequency conversion-based system for sorting
temporal modes chosen from a four-dimensional Hilbert space. Using optical arbitrary waveform …

… Marginal spectra of the PDC idler photon before (magenta) and after (blue) frequency
conversion in the quantum pulse gate centred around their respective centre frequencies. Dashed …

… is quantum frequency conversion. Here we use an efficient polarization-preserving frequency
… -state conversion, 26.5% external frequency conversion efficiency and only 11.4 photons/s …

… quantum information networks. Of particular importance is … quantum frequency conversion
of photons emitted by material systems able to store quantum information, so-called quantum …

… computing network, as well as establish new forms of quantum communication links. …
frequency conversions (Section 4), particularly on the microwave-to-microwave conversion aided …

… in the field of quantum communication: for the realization of quantum repeaters [17–19], …
such as quantum memories and quantum processors have to be linked by long-haul quantum …

… demonstrate the frequency conversion of … quantum repeater protocol and to efficiently
distribute entanglement over long distances. We analyse the single photon frequency conversion …

… quantum communication as well as future cloud quantum … have demonstrated the efficient
frequency conversion of single … and temporal shape through the conversion process. The …

… quantum-state frequency conversion for use in long-distance quantum communication …
In Section 2, we address some aspects of the theory of quantum-state frequency conversion …

… of a quantum interface of frequency down-conversion from … we look at long-distance quantum
communication 10 , a near-… is vital for efficient optical fibre communications. This optical …