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Qudi is a suite of tools for operating multi-instrument and multi-computer laboratory experiments. Originally built around a confocal fluorescence microscope experiments, it has grown to be a generally applicable framework for controlling experiments.


  • A modular and extendable architecture
  • Access to devices on other computers over network
  • XYZ piezo or galvo control for confocal fluorescence microscopy via National Instruments X-Series devices
  • Position optimization for fluorescent spots
  • Tracking of fluorescent spots
  • Tektronix AWG 5000 7000 and 70000 support for pulsed microwave experiments
  • Anritsu MG37022A, MG3696B and MG3961C, R&S SMIQ and SMR support for ODMR measurements
  • Getting spectra from the WinSpec32 spectroscopy software
  • Thorlabs APT motor control
  • Magnetic field alignment for NV- in diamond via fluorescence, ODMR and nuclear spin
  • etc.


If you are publishing scientific results, mentioning Qudi in your methods description is the least you can do as good scientific practice. You should cite our paper Qudi: A modular python suite for experiment control and data processing for this purpose.


User and code documentation about Qudi is located at .

Continuous integration

Build Status Build status Scrutinizer Code Quality


For development-related questions and discussion, please use the qudi-dev mailing list.

If you just want updates about releases and breaking changes to Qudi without discussion or issue reports, subscribe to the qudi-announce mailing list.

Feel free to add issues and pull requests for improvements on github at .

The code in pull requests should be clean, PEP8-compliant and commented, as with every academic institution in Germany, our resources in the area of software development are quite limited.

Do not expect help, debugging efforts or other support.


Almost all parts of Qudi are licensed under GPLv3 (see LICENSE.txt) with the exception of some files that originate from the Jupyter/IPython project. These are under BSD license, check the file headers and the documentation folder.

Check COPYRIGHT.txt for a list of authors and the git history for their individual contributions.