DrChinese's latest activity
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DrChinese replied to the thread A How Does MWI explain Type I PDC Photon Polarization Entanglement?.I agree that at first glance, it shouldn't matter. It's the second glance that is bothering me. A single photon enters the 2 crystal... -
DrChinese replied to the thread A How Does MWI explain Type I PDC Photon Polarization Entanglement?.Great point about beam splitters. But the reason I chose PDC crystals is because (unlike 50:50 splitters), the weighting is more like...
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DrChinese reacted to PeterDonis's post in the thread A How Does MWI explain Type I PDC Photon Polarization Entanglement? with
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By calling them "branches", you're just assuming decoherence has occurred. But, since the experimental fact is that the H and V beams... -
DrChinese replied to the thread I Does Time-Symmetry Imply Retrocausality? How does the Quantum World Say “Maybe”?.Here is an interesting experiment* from over 20 years ago, and it highlights the difficulty of making statements about particles when...
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DrChinese replied to the thread I Does Time-Symmetry Imply Retrocausality? How does the Quantum World Say “Maybe”?.You can't speculate on what happens between (or outside of) measurements! How many times has this message been said about QM? While it...
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DrChinese replied to the thread A How Does MWI explain Type I PDC Photon Polarization Entanglement?.1. I follow this idea. But as I said to PeterDonis: I would certainly expect that a V> photon interaction with a V crystal produces...
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DrChinese replied to the thread A How Does MWI explain Type I PDC Photon Polarization Entanglement?.I would certainly expect that a V> photon interaction with a V crystal produces decoherence, since the resulting branches are quite...
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DrChinese reacted to PeterDonis's post in the thread A How Does MWI explain Type I PDC Photon Polarization Entanglement? with Like.
What is your estimation based on? Note also that any such estimation would apply to any interpretation, since whether or not...
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DrChinese reacted to syed's post in the thread A How Does MWI explain Type I PDC Photon Polarization Entanglement? with Like.
Entanglement arises not from separate branches merging, but from the global wavefunction maintaining coherence before any branching...
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DrChinese replied to the thread A How Does MWI explain Type I PDC Photon Polarization Entanglement?.In my estimation, decoherence occurs too often to explain the results. There won’t be enough entangled pairs produced. Due to weighting...
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DrChinese replied to the thread I Does Time-Symmetry Imply Retrocausality? How does the Quantum World Say “Maybe”?.There may be intermediate states, I don’t know what happens in between. They just cannot be the ones claimed. That is 100% classical...
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DrChinese reacted to PeterDonis's post in the thread A How Does MWI explain Type I PDC Photon Polarization Entanglement? with Like.
You're looking at this backwards. You don't ask the MWI to tell you when branching occurs, and then deduce from what it tells you what...
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DrChinese reacted to PeterDonis's post in the thread A How Does MWI explain Type I PDC Photon Polarization Entanglement? with Like.
Nothing much. Since the H and V branches can be made to interfere with each other by a subsequent action, no branching has occurred as...
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DrChinese reacted to gentzen's post in the thread I Can entanglement swapping be explained without nonlocal influences? with Like.
But how should I know what counts as an explanation for you? How should philosophy help, if everybody decides for himself anyway, which...
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DrChinese posted the thread A How Does MWI explain Type I PDC Photon Polarization Entanglement? in Quantum Interpretations and Foundations.Calling MWI knowledgeable members and advocates! My question includes a deep dive into how Type I parametric down conversion (PDC)...
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