Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The erase of quantum states by measurement

  1. Aug 18, 2012 #1
    I was reading this article, http://www.nature.com/news/2009/090122/full/news.2009.50.html, and it was talking about how they 'teleported' a Ytterbium ion (Yb+) and mid-way through the article it said that they had to destroy the quantum state of the original Ytterbium ion and they did that by simply measuring its quantum state. Now my question is why??? Why was the quantum state erased by simply measuring it??
  2. jcsd
  3. Aug 18, 2012 #2
    The answer is in the preceding paragraph:

    When you MEASURE [interact with] an entangled particle, you force it to assume some state. WHY this happens and exactly what it means are the subject of much debate; one thing for sure, it is not classically 'logical'....so it does not make 'sense'....

    Read the first several posts here for a good discussion:

  4. Aug 19, 2012 #3
    Oh alright thanks, the fact that it doesn't make 'sense' I can understand because I have seen a lot of things in quantum mechanics that are....shall we say.... 'spooky'
    However, I thank you for that link its very helpful!

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook