Understanding Entangled Particles: Is it Possible?

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Discussion Overview

The discussion centers around the possibility of maintaining two particles in an entangled superposition, exploring both the theoretical and experimental aspects of entanglement, particularly regarding duration and distance.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant inquires about the feasibility of maintaining entangled particles in a superposition.
  • Another participant notes that there are numerous experiments demonstrating entanglement, suggesting that the question may pertain to maintaining entanglement over longer periods or distances.
  • Specific examples of entanglement duration and distance are provided, including references to experiments achieving one hour of entanglement and separations of 10 km or more.
  • A later reply expresses gratitude for the information and clarifies the focus on long-term maintenance of entanglement.

Areas of Agreement / Disagreement

Participants appear to agree on the existence of experiments demonstrating entanglement, but there is no consensus on the specifics of maintaining entanglement over time or distance.

Contextual Notes

The discussion does not resolve the complexities involved in maintaining entangled states, such as the effects of decoherence or the specific conditions required for long-term entanglement.

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I am trying to understand how it may be possible to maintain two particles in an entangled superposition.

Is this possible or has this already been done?
 
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Your question could be interpreted several ways. No shortage of experiments demonstrating entanglement, if that is your question. If it is more about maintaining it for longer periods of time or over longer distances:

1 hour of entanglement
http://lanl.arxiv.org/abs/1006.4344

10 km separation (there has been much longer too, across the Canary Islands)
http://arxiv.org/abs/quant-ph/9806043
 
And by the way, welcome to PhysicsForums!
 
Dear Dr Chinese,

Thank you for the answer, I was trying to find out about entanglement maintained for long periods.

And its great to be here at Physics forum thanks.
 

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