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

I Coherent states

  1. Jan 14, 2019 #1
    Cohererent states are defined as eigenstates of the annihilation operator. Never the creation operator is referred to.

    Is this just a convention or is more behind? What is the essential difference between eigenstates of the annihilation- versus the creation operator?

    Thank you very much in advance!
  2. jcsd
  3. Jan 14, 2019 #2


    User Avatar
    Science Advisor
    2018 Award

    There are no eigenstates of the creation operator. The asymmetry between creation and annihilation operators stems from the fact that the ordered basis ##\{|0\rangle, |1\rangle, |2\rangle,\ldots\}## has the first element but not last element.
  4. Jan 14, 2019 #3


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    2018 Award

  5. Jan 14, 2019 #4
    Got it. Thank you very much.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?