1.
Opt Express
; 18(17): 18498-505, 2010 Aug 16.
Article
in English
| MEDLINE
| ID: mdl-20721245
ABSTRACT
We report on an experimental demonstration of applying the beat-note interferometer to simultaneously measure the phase and amplitude variations of light pulses after propagating through an electromagnetically induced transparency medium at femtowatt-light levels. Furthermore, we observe that the measured phase noise approaches the shot-noise level arising from the fluctuations of detected photons.