On Mon, Jul 12, 2021 at 1:48 PM 'Brent Meeker' via Everything List < [email protected]> wrote:
> > So, then you agree with Bruce that so long as the which-way > information > exists in those outgoing photons, the interference pattern will show > up? > > > I think you might have meant that as long as the which-way information > exists (has not been quantum erased), then no interference is visible. > > > Right. That's what I meant to write. > > In quantum erasure double-slit experiments the which-way photons must be > focused to the same point regardless of which slit they indicate...that's > the "erasure". > Maybe that is what Saibal is getting at with his observation of the photons at some point on a second screen. His notation is for a mechanism at each slit which emits a photon if the ball went through that slit. If the photons emitted from either slit are observed at the same point on the photon screen, then you can't tell from which slit they originated -- hence the "erasure". That makes sense, but it did not seem to be what Saibal was saying. And it bears little relation to the actual setup in the buckyball experiment. There is no mechanism to register which slit the ball went through -- the photn(s), if any, are emitted downstream as the heated ball transitions to a lower energy state. Bruce -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/CAFxXSLQRpkr-CkU%3DZ71uEe5RU75Cr_Q7qZ2r%3DOgbh8u2Ax2r%2BQ%40mail.gmail.com.
