this is probably a stupid question but is it not possible to know from which slit the electron or photon came when you time the impact on the detector screen? sometimes the electron can only have come from one slit because it must have gone faster than light otherwise no?
thanks for the answer, after reading some more i understand what you say but i don't understand why the 2 detectors that have no which path information create interference paterns which are out of fase?
isn't it possible to combine these 2 detectors in one detector somehow with a new setup?
what...
When you have the delayed choice quantum eraser, and you make it really really big and you put a measuring device just before the prism where the entangled photon will hit (Kim et al experiment). Does that mean that when that measuring device is 1 light year away and the people operating it can...