Pikosekunden Time-Tagger mit 21 Kanälen

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In the Quantum Information and Communication department, non-classical light is generated through nonlinear optical processes. In these experiments, complex and highly sensitive quantum optical states are created, manipulated, and measured at the single-photon level. For the conversion of analog electrical signals, measured with single-photon sensitive detectors, into a digital form that can be further processed by standard IT systems, a time-tagger is required. This digital counting system converts detection events in an incoming photon stream into digital timestamps, referred to as time tags (English). This time-to-digital converter is referred to here as a time-tagger (English). The time-tagger has a total of 21 input channels for the analog input signals. One channel serves as a start signal, which is generated by a laser photodiode. The other 20 channels are to be connected to the output signals of single-photon sensitive detectors. Simultaneous arrival time correlation measurement with all channels must be possible. Furthermore, arrival time correlation measurements between any number of existing channels must be possible. Arrival time correlation measurements without the…

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