
Quantum Optics and Quantum Information
qutools quTAG
qutools develops, manufactures and distributes quantum information products, which include: time-to-digital converters, time taggers, entangled photon sources, quantum random number generators, quantum entanglement demonstrators, and quantum optics components. Most of the products have been developed and/or tested in the quantum information research labs of the Ludwig-Maximilians-University of Munich. It is the aim of qutools to continue developing new tools and improving existing tools for quantum information science, quantum metrology and quantum cryptography.
Models


The quTAG is a high-speed Time-Correlated Single Photon Counting (TCSPC) system. It is capable of detecting events with a digital resolution of 1 picosecond (ps) and a jitter under 10 ps RMS. It allows synchronizing with up to four standard models with all 16 stop channels using the same timebase and clock input. This allows it to capture up to 100 million time tags per second. It registers all signals between -3 up to +3 volts, like the widely used LVTTL or NIM. Separate channels for start and external clock are usable on the front panel. It connects with a computer via USB, preferably USB 3.0, to transfer the extensive data. It is delivered including software for Windows and Linux with an easy to use graphical user interface. DLLs and examples for LabVIEW and Python also are included.
Features
- Timing jitter: 4.2 ps RMS
- Digital resolution: 1 ps
- Max event rate: 100 M/s (per device), 25 M/s (per channel)
- 4 stop channels, 1 start channel (Max. 16 stop channels)
- Input signals: e.g. LVTTL, NIM everything between -3 V and +3 V
- Dimensions: 44 cm x 30 cm x 5 cm
Applications
- Time-Correlated Single Photon Counting (TCSPC)
- Time Resolved Fluorescence
- Quantum Optics / Information / Communication
- Fluorescence / Phosphorescence Lifetime Measurements / Imaging (FLT / FLIM)
- Fluorescence (Lifetime) Correlation Spectroscopy (FCS / FLCS)
- Stimulated Emission Depletion Microscopy (STED)
- Foerster Resonance Energy Transfer (FRET)
- Single Photon Emitter Characterization
- LIDAR
- DNA sequencing


The quTAG HR is designed for high resolution measurements with up to 16 channels. The time taggers of the quTAG family are available with a wide range of timing resolution and channel numbers. Enhanced timing jitter values can be achieved by interconnecting input channels via software. Separate channels for start and external clock are usable on the front panel. It connects with a computer via USB, preferably USB 3.0, to transfer the extensive data. It is delivered including software for Windows and Linux with an easy to use graphical user interface. DLLs and examples for LabVIEW and Python also are included.
Features
- Timing jitter: 2.3 ps RMS
- Digital resolution: 1 ps
- Sustained event rate: 100 M/second
- Up to 16 high resolution stop channels
- Dimensions: 44 cm x 30 cm x 5 cm
Applications
- Time-Correlated Single Photon Counting (TCSPC)
- Time Resolved Fluorescence
- Quantum Optics / Information / Communication
- Fluorescence / Phosphorescence Lifetime Measurements / Imaging (FLT / FLIM)
- Fluorescence (Lifetime) Correlation Spectroscopy (FCS / FLCS)
- Stimulated Emission Depletion Microscopy (STED)
- Foerster Resonance Energy Transfer (FRET)
- Single Photon Emitter Characterization
- LIDAR
- DNA sequencing


The quTAG MC is designed for a high number of simultaneous measurements with up to 32 channels in one device and the ability of synchronizing multiple devices. The time taggers of the quTAG family are available with a wide range of channel numbers and timing resolution. Enhanced timing jitter values can be achieved by interconnecting input channels via software. Separate channels for start and external clock are usable on the front panel. It connects with a computer via USB, preferably USB 3.0, to transfer the extensive data. It is delivered including software for Windows and Linux with an easy to use graphical user interface. DLLs and examples for LabVIEW and Python also are included.
Features
- Timing jitter: 10 ps RMS
- Digital resolution: 1 ps
- Sustained event rate: 100 M/second
- Up to 32 channels in one device
- Synchronization of multiple devices
- Dimensions: 44 cm x 30 cm x 5 cm
Applications
- Time-Correlated Single Photon Counting (TCSPC)
- Time Resolved Fluorescence
- Quantum Optics / Information / Communication
- Fluorescence / Phosphorescence Lifetime Measurements / Imaging (FLT / FLIM)
- Fluorescence (Lifetime) Correlation Spectroscopy (FCS / FLCS)
- Stimulated Emission Depletion Microscopy (STED)
- Foerster Resonance Energy Transfer (FRET)
- Single Photon Emitter Characterization
- LIDAR
- DNA sequencing
Videos
qutools Webinar 2020