The International Wigner Workshop (IWW) series was established by the Wigner Initiative and provides a platform for the growing inter-disciplinary Wigner community. It brings researchers in the many fields of science and engineering together where Wigner functions are applied. The International Wigner Workshop series follows a biennial schedule and was established in 2015.

Wigner functions have become extremely important in the past decades, because of their ability to clearly illustrate non-classical behavior and quantum entanglement. This makes them very important for coherent matter-wave physics, optically-based frequency standards, and systems using quantum entanglement and coherence in quantum systems. In addition, the Wigner function approach gives unique insight into studies of the materials systems and materials properties that are essential for improving the capabilities in systems based upon the quantum features mentioned just above.