3 ms·
Nah, GP is right, if he's talking about how you can decompose states into superpositions of coherent states of the whole field. These are different from coheren
by knzhou 6y ago
Nah, GP is right, if he's talking about how you can decompose states into superpositions of coherent states of the whole field. These are different from coherent states of individual modes.
Specifically, a coherent state of a field is a state which is an eigenvector of the positive-frequency part of the field operator, when that operator is evaluated at any position.
- krastanov 6y agoSee the sibling comment and my answer. A plane wave can very well be a plane wave "containing" one photon or containing multiple photons or containing a coherent state. There is a big difference between saying "I can use different sets of creation operators to form a basis for the field operator" (what I think you are saying) and the confounded statement mixing up basis of a Hilbert space with basis of integrable functions of the OP.
- pdonis 6y ago> if he's talking about how you can decompose states into superpositions of coherent states of the whole field. Yes, that's what I was talking about.