# Quantum entanglement

Quantum Entanglement is one of the most exciting concepts of quantum physics. Albert Einstein once summarised it as “spooky action at a distance,” indicating the weird counter-intuitive nature of the idea. Nowadays, quantum entanglement forms the basis for a large number of applications in quantum computing and communication. But what is quantum entanglement?

In this introductory video, Ph.D. student Jonas Helsen (QuTech) talks about quantum entanglement and covers its two main properties that make quantum entanglement both fascinating and useful for many applications.

## Further thinking

What do you think is the role of monogamous entanglement in ensuring secrecy in quantum communication protocols?

## Further reading

If you want to learn more about Quantum Entanglement, make sure to watch our other videos on the subject. You could also take a look at:

- https://plato.stanford.edu/entries/qt-entangle/

(an excellent textual overview of the history of quantum entanglement and its use for quantum information purposes) // Standard - Nielsen, M. A., & Chuang, I. (2002). Quantum computation and quantum information.

(a renowned book that covers all concepts of quantum information quite thoroughly) // Advanced