What chronology of Bell inequalities testing ?

[limarodessa]

Hi all !


What chronology of Bell inequalities testing ( their violation ) ?

What positive and negative aspects of each experiment ?

What experiments have been spent latest years ?

Some material:

http://arxiv.org/PS_cache/quant-ph/pdf/0310/0310192v1.pdf


Thanks.

 

[DrChinese]

Hi all !

What chronology of Bell inequalities testing ( their violation ) ?

What positive and negative aspects of each experiment ?

What experiments have been spent latest years ?

Thanks.

Aspect et al, circa 1981, was the early watershed. This included the feature that the polarization settings were changed midflight and showed about 5 standard deviations of confidence. The next biggie was Weihs et al, 1998, which improved substantially on the strict localization of Alice and Bob by separating them by over 2 kilometers.

Aspect wrote on the progress a few years back in this article:
http://www-ece.rice.edu/~kono/ELEC565/Aspect_Nature.pdf

A good summary of the state of Bell tests and theory development is here (106 pages, 505 references, as of 2007):
http://arxiv.org/abs/quant-ph/0701071

 

[Entropia]

I find the topic of Bell inequalities testing to be fascinating and constantly evolving. The chronology of Bell inequalities testing can be traced back to the original work of John Stewart Bell in the 1960s, which led to the famous Bell's theorem and the development of Bell inequalities as a way to test for the violation of local realism in quantum mechanics.

Since then, numerous experiments have been conducted to test Bell inequalities and the results have consistently shown a violation of local realism, supporting the predictions of quantum mechanics. Some notable experiments include the Aspect experiment in 1982, the Weihs experiment in 1998, and the Hensen experiment in 2015. These experiments have provided strong evidence for the non-local nature of quantum entanglement and have furthered our understanding of the fundamental principles of quantum mechanics.

In terms of positive aspects, these experiments have helped to confirm the predictions of quantum mechanics and have opened up new avenues for studying and utilizing quantum phenomena. They have also sparked new theoretical developments and discussions about the nature of reality and the role of locality in quantum mechanics.

On the negative side, some have criticized these experiments for not fully ruling out alternative explanations for the observed violations of Bell inequalities. Additionally, there have been challenges in conducting these experiments due to technical limitations and the difficulty in controlling all variables.

In recent years, there has been a surge in interest and advancements in Bell inequalities testing. This can be seen in the increasing number of experimental setups and the use of new technologies, such as entangled photons and quantum teleportation, to test Bell inequalities. The paper provided in the material is a great example of this, discussing a recent experiment in 2003 that used entangled photons to test Bell inequalities with high precision.

In conclusion, the chronology of Bell inequalities testing has been a constantly evolving and exciting field of study. The experiments conducted over the years have provided strong evidence for the non-local nature of quantum entanglement and have opened up new possibilities for understanding and utilizing quantum mechanics. With continued advancements in technology and theoretical developments, we can expect to see even more exciting developments in Bell inequalities testing in the future.