The Trapped Idler Photon Interruptible Causality Experiment
An proposed quantum physics experiment by John Adams Theibert Jr.
This article refers to the article http://www.bottomlayer.com/bottom/kim-scully/kim-scully-web.htm
This is a modified version of the Delayed Choice Quantum Eraser Experiment. The way it would work is as follows:
Set up the Delayed Choice Quantum Eraser Experiment so that you replace the 50–50 beamsplitters BSA and BSB with controllable switches. The controllable switches could be rotatable mirrors that can let the beams pass on to the quantum eraser detectors or rotate to reflect the beams to the “which path” detectors. You then put large gaps between the prism and the rotatable mirrors, which are large enough to trap the idler photons before the “which path” information can be determined and also large enough to give enough time to change the “which path” information after a pattern would have already formed at detector zero (D0).
You replace the detector zero with a delayed detection device that will not register a pattern until after the experiment is over. You calculate how long the idler photons will be trapped and map that information onto each signal photon so that you know when each signal photon gets to the D0. This could be as simple as using photo paper at D0 that will not form an image until after it is developed. You will also need to modify the laser to be on a robotic mechanism that will move it vertically into three different positions to form three patterns on the photo paper.
At first you set the rotating mirrors to let the beams go on to the quantum eraser detectors. Then after enough time passes to let a pattern form on the photo paper at position 1 you move the robotic laser down to position 2 during the time the idler photons are trapped in the gap, then just before the idler photons are about to leave the gap you switch the rotating mirrors to send the photons in the gap to go on to the “which path” detectors instead, and move the robotic laser down to position 3 forming the final pattern.
Conclusion:
Make sure no one looks at the photo paper during the experiment and that no real time detector is in the D0 area during the experiment. Take the photo paper and develop it after the experiment is over. If the pattern at position 2 is an interference pattern, then there is no reverse time travel of the quantum entanglement information. If there is a clump pattern at position 2 then there is reverse time travel of the quantum entanglement information. Position 1 should show an interference pattern and position 3 should show a clump pattern.
This experiment might need to be run by NASA or Space X to be possible, with a 20 to 30 year time to develop the technology, build the spacecrafts, lunch them to their destination, run the experiments, get the results, and analyze them to find the outcome. The budget would probably run around 5 to 10 billion dollars. If conducted properly it will definitively prove or refute locality and causality as we know them and as described by Einstein.
A result that definitively proves Einsteins description of locality and causality would also imply the existence of quantized time. This result would show that the quantum entangled photons lose entanglement at the time one of them is detected or at the time that one of them begins to form a pattern in the photo paper even though no one knows the “which path” information when the signal photons form the pattern during the time the idler photons are trapped in the gap.