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Alt 24.01.17, 03:06
Plankton Plankton ist offline
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Pfeil AW: A Delayed Choice Quantum Eraser

....noch etwas allgemein:
"[...] the possibility of simultaneously observing both particle-like and wave-like behavior of a quantum via quantum entanglement. [...]"
https://arxiv.org/pdf/quant-ph/9903047.pdf

Man sollte auch IMHO genau den Versuchsaufbau sich anschauen. Wichtig ist da:
Zitat:
[...] D0 will be triggered much earlier by photon 1. After the registration of photon 1, we look at these “delayed” detection events of D1, D2, D3, and D4 which have constant time delays, τi ≃ (Li − L0)/c, relative to
the triggering time of D0. [...]
Genau genommen wird nacheinander bzw. zu unterschiedlichen Zeiten beobachtet. (Muss IMHO auch so sein, sonst könnte man das ja schlecht realisieren und darstellen.) Das kann man (auch) dann bei Fig.4 und Fig.5 sehen.
{ R02 (“joint detection” rate between detectors D0 and D2); R03 (“joint detection” rate between detectors D0 and D3) }
Es gibt auch "generell" einen "π phase shift", BTW.

Mir ist das in dem Zusammenhang wichtig, wie man quasi "gleichzeitig" "Partikel -Action" und "Wellen - Action" zeigen tut bei der Sache.
Ich hoffe ich gebe das nicht zu ungenau an. Vielleicht daher noch das Zitat dazu:
Zitat:
It is easy to see these “joint detection” events must have resulted from the same photon pair. It was predicted that the “joint detection” counting rate R01 (joint detection rate between D0 and D1) and
R02 will show interference pattern when detector D0 is scanned along its x-axis. This reflects the wave property (both-path) of photon 1. However, no interference will be observed in the “joint detection” counting rate R03 and
R04 when detector D0 is scanned along its x-axis. This is clearly expected because we now have indicated the particle property (which-path) of photon 1. It is important to emphasize that all four “joint detection” rates
R01, R02, R03, and R04 are recorded at the same time during one scanning of D0 along its y-axis. That is, in the present experiment we “see” both wave (interference)
and which-path (particle-like) with the same apparatus.
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