# Prof. Berge Englert

## Courses

Welcome to Quantum Mechanics I

Welcome to Quantum Mechanics II

## Blogs/Videos

Interferometer - wave mode and particle mode

Quantum objects are neither particles nor waves, they possess both particle aspects and wave aspects.

Article: How we know that there are photons?

In this article, we recall the contributions of the main actors during the 19th and the early 20th century for the discovery of the nature of light.

Interferometer and Uncertainties

In this dual, we compare the uncertainty relations and the inequalities given by an interferometer.

No Cloning Theorem in 5 mins

In this video, we go through the simple proof of the no-cloning theorem and find out how unknown quantum state cannot be copied.

How do we know that there are photons?

In this video, we go through the history on the discovery of photons, talk about the major players and their contributions.