Title :
Signal velocity, causality, and quantum noise in superluminal light propagation
Author :
Kuzmich, A. ; Dogariu, Aristide ; Wang, L.
Author_Institution :
California Inst. of Technol., Pasadena, CA, USA
Abstract :
Summary form only given. We consider superluminal pulse propagation in the framework of a microscopic atomic theory. Quantum fluctuations of the ground-state atomic coherences that provide gain are responsible for the excess noise in this situation. The excess noise grows exponentially with the magnitude of pulse advancement (referenced to propagation in vacuum), therefore preventing a signal being sent faster than c.
Keywords :
causality; light coherence; light propagation; light velocity; quantum noise; quantum optics; causality; excess noise; ground-state atomic coherences; microscopic atomic theory; pulse advancement; quantum fluctuations; quantum noise; signal velocity; superluminal light propagation; Optical propagation;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2002. QELS '02. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Long Beach, CA, USA
Print_ISBN :
1-55752-708-3
DOI :
10.1109/QELS.2002.1031273
