Bell tests

The loophole free Bell experiments are among the top achievements in quantum information science over the last few years. However, as with other recent experimental validations of an a well accepted theory, the results did not change our view of reality. The few skeptics remained unconvinced, while the majority received further confirmation of a theory we already accepted. It turns out that this was not the case with the first Bell tests in the 1970s and 1980s (Clauser, Aspect etc. )

Jaynes, a prominent 20th century physicist who did some important work on light matter interaction did not believe that the electromagnetic field needs to be quantized (until Clauser’s experiment) and did extensive work on explaining optical phenomena without photons. As part of our recent work on modeling a quantum optics experiment using a modified version of classical electrodynamics (and no `photons’) we had a look at Jaynes’s last review of his neo-classical theory (1973). This work was incredibly impressive and fairly successful, but it was clear (to him at least) that it could not survive a violation of Bell’s inequalities. Jaynes’s review was written at the same time as the first Bell test experiments were reported by Clauser. In a show of extraordinary scientific honesty he wrote:

If it [Clauser’s experiment] survives that scrutiny, and if the experimental result is confirmed by others, then this will surely go down as one of the most incredible intellectual achievements in the history of science, and my own work will lie in ruins.

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