QED in the Presence of Arbitrary Kramers-Kronig Dielectric Media
Abstract
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.
- Publication:
-
arXiv e-prints
- Pub Date:
- June 1999
- DOI:
- 10.48550/arXiv.quant-ph/9906001
- arXiv:
- arXiv:quant-ph/9906001
- Bibcode:
- 1999quant.ph..6001S
- Keywords:
-
- Quantum Physics
- E-Print:
- 4 pages, LaTeX, contribution to the Sixth International Conference on Squeezed states and Uncertainty relations ICSSUR VI, Naples 24-29 May 1999