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Experimental verification of differences between classical and quantum polarization properties
KTH, Superseded Departments, Microelectronics and Information Technology, IMIT.ORCID iD: 0000-0002-2082-9583
2001 (English)In: Optics Communications, ISSN 0030-4018, E-ISSN 1873-0310, Vol. 193, no 06-jan, 161-173 p.Article in journal (Refereed) Published
Abstract [en]

We have carried out polarization measurements on a two-photon quantum state generated by spontaneous parametric down conversion. Our measurements show that the state is unpolarized in the classical theory, but they also show that the state is not invariant under geometric rotation. Therefore, it is not unpolarized in the quantum theory. This is another example of a rather simple experiment that clearly shows the effects of quantum interference. It also confirms the theoretical investigation by Klyshko [Phys. Lett. A 163 (1992) 349]. The experiment is explained theoretically and a systematic treatment of polarization in quantum theory is outlined.

Place, publisher, year, edition, pages
2001. Vol. 193, no 06-jan, 161-173 p.
Keyword [en]
quantum polarization, Stokes parameters, Stokes operators, Poincare sphere, photon pairs, parametric down-conversion, stokes parameters, 2-photon entanglement, photon pairs, kerr medium, light, states, distributions, fluctuations, operator
URN: urn:nbn:se:kth:diva-20746ISI: 000169546400021OAI: diva2:339443
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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Björk, Gunnar
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