From: julio@diegidio.name   
      
   On Sunday, 12 June 2022 at 21:28:53 UTC+2, Chris Jacobs wrote:   
      
   > In popular descriptions of quantum teleportation I see time and again   
   > that it is explained by spooky action at a distance which is also   
   > simultaneous.   
      
   There is something "spooky" about entanglement for other (intrinsic)   
   reasons, but it does not violate relativity since no information is   
   transferred.  Indeed, quantum teleportation, beside entangled particles,   
   needs a classical channel to transmit classical information from the   
   origin site to the destination site, where that information is needed to   
   reconstruct the state.  As WP puts it:   
      
   << However, in addition to the quantum channel, a traditional channel   
   must also be used to accompany a qubit to "preserve" the quantum   
   information. When the change measurement between the original qubit   
   and the entangled particle is made, the measurement result must be   
   carried by a traditional channel so that the quantum information can be   
   reconstructed and the receiver can get the original information. >>   
      
      
   Julio   
      
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