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| related topics |
| {energy, gaussian, time} |
| {light, field, probe} |
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| {photon, photons, single} |
| {equation, function, exp} |
| {operator, operators, space} |
| {state, states, coherent} |
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| {state, phys, rev} |
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| {time, decoherence, evolution} |
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Quantum theory of light and noise polarization in nonlinear optics
Stefan Scheel, Dirk-Gunnar Welsch
abstract: We present a consistent quantum theory of the electromagnetic field in
nonlinearly responding causal media, with special emphasis on $\chi^{(2)}$
media. Starting from QED in linearly responding causal media, we develop a
method to construct the nonlinear Hamiltonian expressed in terms of the complex
nonlinear susceptibility in a quantum mechanically consistent way. In
particular we show that the method yields the nonlinear noise polarization,
which together with the linear one is responsible for intrinsic quantum
decoherence.
- oai_identifier:
- oai:arXiv.org:quant-ph/0508122
- categories:
- quant-ph
- comments:
- 4 pages, no figures
- doi:
- 10.1103/PhysRevLett.96.073601
- arxiv_id:
- quant-ph/0508122
- created:
- 2005-08-16
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