Any interaction, where energy is involved, is a kind of transfer, or change.
The idea of a measurement of something being available in zero time, or a quantum process occuring without interaction, sounds pretty strange.
There is research (of the mathematical/physical variety), that appears to indicate that this is possible.
Photons can interact with each other, so can change each other via this interaction. Is this an observation? What about a single photon that becomes two? Or two photons that add together, and make one? How can a quantum state (a photon) be stored, frozen in time; written on a BEC at close to 0K?
The idea of a measurement of something being available in zero time, or a quantum process occuring without interaction, sounds pretty strange.
There is research (of the mathematical/physical variety), that appears to indicate that this is possible.
Photons can interact with each other, so can change each other via this interaction. Is this an observation? What about a single photon that becomes two? Or two photons that add together, and make one? How can a quantum state (a photon) be stored, frozen in time; written on a BEC at close to 0K?