Photon charge experiment
Abstract
The deflection of a laser beam traveling through a modulated electric field is measured using phase-sensitive detection to place an upper bound on the photon charge. An upper limit of 10-14e is obtained. Our approach provides a simple experimental scheme for angle measurements and is suitable as a laboratory exercise for both advanced undergraduate and beginning graduate students in physical science.
- Publication:
-
American Journal of Physics
- Pub Date:
- June 2013
- DOI:
- 10.1119/1.4793593
- Bibcode:
- 2013AmJPh..81..436H
- Keywords:
-
- angular measurement;
- electro-optical modulation;
- laser beams;
- physics education;
- quantum optics;
- student experiments;
- 01.50.Pa;
- 14.00.00;
- Laboratory experiments and apparatus;
- Properties of specific particles