Recent content by Marilyn67

Thank you @DrClaude, this discussion is indeed very interesting ! :smile:

Hello @DrChinese , Thank you for your quick response. Something escapes me: In 1803, Thomas Young performed his experiment of the two slits with a beam of sunlight and found interference. A reproduction of the experiment can be seen here as well as the reading of Thomas Young's manuscripts ...

Hello, I'm not sure I understood the whole transposition of L.E. Ballentine's problem 9.6, to that of the Mach-Zehnder interferometer but it seems to me that the main thing to remember, (the same thing) is this : The probability density on the screen for the whole ensemble will be ...

Hello @Hyperfine, Thank you for your sincere response :smile: Don't worry about my optical table, it didn't cost me much. I used a simple very large mirror as an optical table for its remarkable qualities of surface flatness and for its reflections which allowed me to facilitate the...

Thank you very much @PeterDonis for your really very detailed explanations (I really appreciate all these important clarifications). I think I have understood the meaning of your comparison and to be sure of having understood everything, I will still study in depth the configuration of L. E...

Hello @PeterDonis , Hello @WernerQH , Your exchanges are really very instructive (the questions and the answers). Does the scenario you are talking about correspond to the figure in the following document ? (page 271 of the pdf = page 256 of the paper) ...

Hello @WernerQH, The beam sent to Alice is entangled with the second beam (whether it's sent to Bob or in nature, it's the same...). From what I understand, in this situation (with both paths open), there are always "participations" in building individual interference patterns. Contrary to...

Hello @WernerQH The beam sent into the interferometer is an entangled beam, and the entanglement comes under quantum mechanics. Therefore, classical physics can no longer deal with this problem. Yes, it's always necessary to establish correlations a posteriori to sample the patterns which...

@StevieTNZ Short answer : I suggest you re-read my "lengthy response", post #5 :wink: I wonder what makes you react this way. No one saw you arguing on the question asked... Thanks for your help 😞

Hello @WernerQH, It was my first intuition to me also not so long ago. It was on thinking about it, knowing that the literature specified that Bob would never see interference, no matter what Alice did, that I began to have my doubts about what Alice might see : I said to myself : why...

Thank you @PeterDonis for confirming this : @andrewkirk had therefore found the correct answer 👍 There are many popular interpretations, but I had never heard of the "ensemble interpretation". Thank you both again :wink: Cordially, Marilyn

Hello @StevieTNZ , I have to be honest too. I get the feeling you think I don't trust QM predictions. It's the exact opposite ! I would have a hard time, with my modest level, to question them ! I have the greatest admiration for all the physicists who have contributed for nearly a century...

Hello @andrewkirk Thank you for your reply. So you're not sure, and neither am I...:oops: No, I haven't done this experiment, because I need to know more before investing in building an entangled photon source and refining the protocol I have in mind because this schematic is an option for...

Hello, In order not to be off-topic, I opened a new thread dedicated to a question that bothers me and that hinders my future studies concerning the behavior of entangled photons in the Mach-Zehnder interferometer that I built there a few weeks ago ...

Hello, The Mach-Zehnder interferometer makes it possible to highlight the corpuscular and undulatory aspect of light, (in particular using single photons). By using the "continuous" beam from a coherent source, one is able to visualize directly on two screens E1 and E2, an interference pattern...