October 2019 Meeting: The origin of entanglement and the experimental tests of Bell inequality

Discussion Leaders: Prof. Andreas Albrecht ( UCD Physics) and Prof. Marina Radulaski (UCD Electrical and Computer Engineering)

October 9th, 2019
Physics 432

Albrecht Summary

I will use our Adapted Caldeira Leggett (ACL) model to introduce and illustrate the concepts of decoherence and einselection. At the end I will show some new phenomena we have discovered which may be observable in the laboratory.

Relevant Journal Paper:
Zurek, Wojciech Hubert. "Decoherence, einselection, and the quantum origins of the classical." Reviews of modern physics75, no. 3 (2003): 715.

Radulaski Summary

I will discuss experimental tests of Bell inequality using quantum optical systems, with the focus on the 2015 loophole-free test based on NV centers in diamond.

Relevant Journal Paper:
Hensen, Bas, Hannes Bernien, Anaïs E. Dréau, Andreas Reiserer, Norbert Kalb, Machiel S. Blok, Just Ruitenberg et al. "Loophole-free Bell inequality violation using electron spins separated by 1.3 kilometres." Nature 526, no. 7575 (2015): 682.