Update README.md

Signed-off-by: Fabiana 🚀  Campanari <113218619+FabianaCampanari@users.noreply.github.com>

Author: FabianaCampanari

README.md

@@ -111,12 +111,14 @@ Feel free to explore, contribute, and share your insights!
    - $\large \color{DeepSkyBlue} \gamma^\mu$ are the Dirac matrices.  
    - $\large \color{DeepSkyBlue} m$ is the mass of the particle.  
 
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+## Mid-20th Century – Foundation for Quantum Information
 
+7. **John von Neumann (1932)**  
+   * Formalized the mathematics of quantum mechanics and introduced operator theory.
 
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