Simple representation of the quantum entanglement of coupled harmonic oscillators in terms of the reflection coefficient
Yu. V. Tsykareva, Dmitry N. Makarov · Journal of Physics Conference Series · 2021
Abstract Quantum entanglement of coupled harmonic oscillators is frequently applied in quantum and non-linear physics, molecular chemistry and biophysics, which is why its study is of a great interest for modern physics. In this work a quantum entanglement of a coupled harmonic oscillator in a simple form was found. This simple form is presented as a single parameter – reflection coefficient R. All parameters of the studied system are included in the R coefficient. It is shown that the derivation of the expression can have applications in quantum optics, in particular in quantum metrology.