Summary of “How the nature of cause and effect will determine the future of quantum technology”

Today we get an answer to this question, thanks to the work of Morgan Mitchell at the Barcelona Institute of Science and Technology in Spain, along with dozens of collaborators and more than 100,000 experimenters around the world who have carried out a unique test of one of the most confounding predictions of quantum theory.
One of the curious features of quantum mechanics is that it allows quantum particles created at the same point in space and time to share the same existence.
In the late 1960s, the Bell test was beyond the capabilities of quantum physicists.
They have become routine in quantum optics labs and a key part of the protocols used in emerging technologies such as quantum cryptography.
The bits were then fed at a constant rate of 1,000 bits per second to labs all around the world that had agreed to perform a Bell test in various ways, using photons as the quantum particles, atoms, and even superconductors in myriad combinations.
That is good news for the many emerging quantum technologies that rely on Bell tests, such as quantum teleportation and quantum cryptography.
Quantum mechanics-and Bell tests in particular-blur the distinction between cause and effect.
It is 50 years since Bell put forward his controversial ideas, but Bell tests now lie at the heart of the emerging quantum technology revolution.

The orginal article.