![]() ![]() In addition, the equal heights of the peaks illustrate that the source is stable and does not suffer from emitter blinking. Time Tagger X Streaming time-to-digital converters Cluster Integrated, synchronized and modular control Laser Rack Systems Modular and compact 19 Laser. The evaluated data (Figure 2) shows a very low g2(0) signal and demonstrates the single-photon emission for an excitation frequency of 60 MHz. Figure 2: Live measurement of the single-photon purity realized with the Time Tagger API (.NET library) channels (list) list of channels on which coincidence will be detected in the virtual channel. The easy to use interface, including the capability for a live evaluation of the data, suits very well for this purpose. class Coincidence (tagger, channels, coincidenceWindow 1000, timestamp CoincidenceTimestamp.Last) Parameters: tagger (TimeTaggerBase) time tagger object instance. The performance of the photon source is measured with the Time Tagger 20 (top right): correlated photons are counted in the HBT configuration with the multiple-start / multiple-stop functionality provided from the correlation measurement class of the Time Tagger API. More details about the demo setup and the measurements can be found in the following application note: Integration of the Sparrow Quantum Single-Photon Chip with the Montana Instruments Cryo-Optic X-Plane system The excitation, collection and imagining optics including the spectral filter and the Hanbury Brown and Twiss setup is located inside the enclosure to minimize stray light and to provide a protected environment. ![]() The X-Plane System (very left of Figure 1) includes the Cryogenic sample, mount, and objective. Figure 1 Single Photon source with the Time Tagger 20 attached (top right) Sparrow Quantum and Montana Instruments demonstrate with their demo setup for their powerful single-photon chip a steady stream of single photons with an extraordinary coupling efficiency using the Montana Instruments Cryo-Optic X-Plane System. The data acquisition and evaluation for the application presented below is a good example to show the benefit of Swabian Instrument’s Time Tagger for analyzing single photons signals detected by APDs. On the verge of quantum technologies arising, precise time-correlated photon counting is one of the key components to analyze quantum devices. ![]() Single-photon sources: Sparrow Quantum and Montana Instruments ![]()
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