1999/06/01 by S. Scheel, Scheel, S., D. -G. Welsch +1
Physics and Astronomy · #FOS: Physical sciences #Quantum Physics (quant-ph) #quant-ph
paper · pdf · doi:10.48550/arxiv.quant-ph/9906001
4 pages, LaTeX, contribution to the Sixth International Conference on Squeezed states and Uncertainty relations ICSSUR VI, Naples 24-29 May 1999
arxiv created 1999/07/16 · arxiv updated 2009/12/01
The phenomenological Maxwell field is quantized for arbitrarily space- and frequency-dependent complex permittivity. The formalism takes account of the Kramers--Kronig relation and the dissipation-fluctuation theorem and yields the fundamental equal-time commutation relations of QED. Applications to the quantum-state transformation at absorbing and amplifying four-port devices and to the spontaneous decay of an excited atom in the presence of absorbing dielectric bodies are discussed.