Measurement of entangled particles causes dechorence at a distance?

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Measuring one entangled particle does not cause decoherence in the other particle at a distance, nor does it violate relativistic causality. The measurements are independent events, and their outcomes are not influenced by the order in which they occur due to the space-like separation. While measuring one particle affects the state of the other, this change is non-local and cannot be observed instantaneously. The concept of coherence is a global property that requires both particles to be considered together, and any disturbance to one affects the entire system without allowing for faster-than-light information transfer. Ultimately, the nature of entangled particles ensures that while they are linked, the effects of measurement do not convey information instantaneously.
  • #51
I found Dopfer1998 thesis.pdf
It is in german!
see p 83 She puts the detector between the focal plane (Brennebene) and the imaging plane (Abbildungsebene)
I hope that a german speaking physicist will help us.
 

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