Experimental determination of the degree of polarization of quantum states

Christian Kothe-Termén, Lars Skovgaard Madsen, Ulrik Lund Andersen, Gunnar Björk

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

We demonstrate experimental excitation-manifold-resolved polarization characterization of quantum states of light ranging from the few-photon to the many-photon level. In contrast to the traditional characterization of polarization that is based on the Stokes parameters, we experimentally determine the Stokes vector of each excitation manifold separately. Only for states with a given photon number do the methods coincide. For states with an indeterminate photon number, for example Gaussian states, the employed method gives a richer and more accurate description. We apply the method both in theory and in experiment to some common states to demonstrate its advantages. © 2013 American Physical Society.
Original languageEnglish
JournalPhysical Review A
Volume87
Issue number4
Pages (from-to)043814
Number of pages5
ISSN2469-9926
DOIs
Publication statusPublished - 2013

Keywords

  • Photons
  • Polarization
  • Quantum theory

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