Photon number density operatoriE^⋅A^
| Autor: | T. Melde, Margaret Hawton |
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| Rok vydání: | 1995 |
| Předmět: | |
| Zdroj: | Physical Review A. 51:4186-4190 |
| ISSN: | 1094-1622 1050-2947 |
| DOI: | 10.1103/physreva.51.4186 |
| Popis: | A photon number density operator proportional to the dot product of the electric field and the vector potential is introduced as an alternative to the Mandel operator. In the Lorentz gauge it is the time component of the four-vector obtained by contracting the electromagnetic field tensor with the vector potential. Its other components can be interpreted as a current-density vector, and these number and current-density operators satisfy a continuity equation. The photon density operators introduced here are all products of operators that satisfy Maxwell's equations and whose Lorentz and gauge transformation properties are well known. |
| Databáze: | OpenAIRE |
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