dorsal/arxiv
View SchemaA local realist theory of parametric down conversion
| Authors | Trevor W. Marshall |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/9711030 |
| URL | https://arxiv.org/abs/quant-ph/9711030 |
Abstract
In a series of articles we have shown that all parametric-down- conversion processes, both of type-I and type-II, may be described by a positive Wigner density. These results, together with our description of how light detectors subtract the zeropoint radiation, indicated the possibility of a completely local realist theory of all these processes. In the present article we show how the down-converted fields may be described as retarded fields, generated by currents inside the nonlinear crystal, thereby achieving such a theory. Most of its predictions coincide with the standard nonlocal theory. However, the intensities of the down converted signals do not correspond exactly with the photon pairs of the nonlocal theory. For example, in a blue- red down conversion we would find 1.03 red "photons" for every blue one. The theory also predicts a new phenomenon, namely parametric up conversion from the vacuum.
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"abstract": "In a series of articles we have shown that all parametric-down- conversion\nprocesses, both of type-I and type-II, may be described by a positive Wigner\ndensity. These results, together with our description of how light detectors\nsubtract the zeropoint radiation, indicated the possibility of a completely\nlocal realist theory of all these processes. In the present article we show how\nthe down-converted fields may be described as retarded fields, generated by\ncurrents inside the nonlinear crystal, thereby achieving such a theory. Most of\nits predictions coincide with the standard nonlocal theory. However, the\nintensities of the down converted signals do not correspond exactly with the\nphoton pairs of the nonlocal theory. For example, in a blue- red down\nconversion we would find 1.03 red \"photons\" for every blue one. The theory also\npredicts a new phenomenon, namely parametric up conversion from the vacuum.",
"arxiv_id": "quant-ph/9711030",
"authors": [
"Trevor W. Marshall"
],
"categories": [
"quant-ph"
],
"title": "A local realist theory of parametric down conversion",
"url": "https://arxiv.org/abs/quant-ph/9711030"
},
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