Signal velocity, causality, and quantum noise in superluminal light pulse propagation. Academic Article

abstract

• We consider pulse propagation in a linear anomalously dispersive medium where the group velocity exceeds the speed of light in vacuum ( c) or even becomes negative. A signal velocity is defined operationally based on the optical signal-to-noise ratio, and is computed for cases appropriate to the recent experiment where such a negative group velocity was observed. It is found that quantum fluctuations limit the signal velocity to values less than c.

authors

• Dogariu, Arthur

published proceedings

• Phys Rev Lett

altmetric score

• 4

author list (cited authors)

• Kuzmich, A., Dogariu, A., Wang, L. J., Milonni, P. W., & Chiao, R. Y.

citation count

• 199

complete list of authors

• Kuzmich, A||Dogariu, A||Wang, LJ||Milonni, PW||Chiao, RY

publication date

• April 2001

publisher

• American Physical Society (APS)  Publisher

published in

• Physical Review Letters  Journal

keywords

• 51 Physical Sciences
• 5108 Quantum Physics

PubMed Central ID

• 11328062

Digital Object Identifier (DOI)

• 10.1103/PhysRevLett.86.3925

start page

• 3925

end page

• 3929

volume

• 86

issue

• 18

URL

• http://dx.doi.org/10.1103/physrevlett.86.3925