|
related topics |
{photon, photons, single} |
{wave, scattering, interference} |
{light, field, probe} |
{operator, operators, space} |
{bell, inequality, local} |
{field, particle, equation} |
{energy, state, states} |
{entanglement, phys, rev} |
|
Is orbital angular momentum always conserved in spontaneous parametric
down-conversion?
Sheng Feng, Chao-Hsiang Chen, Geraldo A. Barbosa, Prem Kumar
abstract: In the non-linear optical process of type-II spontaneous parametric
down-conversion, we present on an experiment showing that the two-photon
detection amplitude of the down-converted beams does not generally reproduce
the transverse profile of the pump beam that carries non-zero orbital angular
momentum. We explain this observation by that orbital angular momentum is not
conserved in the type-II non-linear process due to the broken rotational
symmetry of the Hamiltonian.
- oai_identifier:
- oai:arXiv.org:quant-ph/0703212
- categories:
- quant-ph
- comments:
- 4 pages, 3 figures, submitted to Phys. Rev. Lett. Revised
- doi:
- 10.1117/12.734118
- arxiv_id:
- quant-ph/0703212
- created:
- 2007-03-22
- updated:
- 2007-04-20
Full article ▸
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