On balanced homodyne measurement -- simple proof of wave function collapse
Quantum Physics
2024-04-22 v1 Mathematical Physics
math.MP
Abstract
Using only elementary calculus we prove that the balanced homodyne detector measures the quadrature phase amplitude of a signal. More precisely, after the measurement of photon numbers , the collapse of the composite state of a strong laser beam and a signal approximates the collapse of the signal to the eigen-state of quadrature phase amplitude with eigen-value .
Keywords
Cite
@article{arxiv.2404.12706,
title = {On balanced homodyne measurement -- simple proof of wave function collapse},
author = {Erwin Brüning and Shigeaki Nagamachi},
journal= {arXiv preprint arXiv:2404.12706},
year = {2024}
}