Got the double-slit setup calibrated and running!

Apr 16, 2019

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Got the double-slit setup calibrated and running!Hello wonderful supporters!
Yesterday we were supposed to get the double-slit setup calibrated, running, and automated. The first two worked, the second one had to be delayed for some extra machining. More on that next week!
But here's a video of me being excited to take you through the calibrated system, running 1 photon at a time, and yet showing an interference pattern (Young's famous experiment). Also, each setup has to have its own signal:noise ratio discovered through trial and error, and I found the optimal S:N ratio for this system -- about 163:1 for peak photodetector placement versus noise. 
Excited to work with our engineer Loren Carpenter tomorrow on the automation of the necessarily slow voltage ramp-up for the photodetector. More soon!
Thanks again!!
Julia
 

Jay, Michael, and 2 others like this.

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Cindy Wu

I love your videos.

Apr 17, 20190

About This Project

Are we catching photons traveling in time?

Northwestern University

We plan to replicate and extend unpublished pilot results suggesting that photons to be emitted in the future affect interference patterns detected in the past. This may be a new example of quantum retrocausality (QR), in which choices in a quantum system seem to influence events in the past. This form of QR may be a candidate mechanism for precognition, the psychological and biological access to information about random future events.