Nonlocal compensation of pure phase objects with entangled photons

S. Cialdi, D. Brivio, E. Tesio, M. G. A. Paris

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We suggest and demonstrate a scheme for coherent nonlocal compensation of pure phase objects based on two-photon polarization and momentum entangled states. The insertion of a single phase object on one of the beams reduces the purity of the overall detected state and the amount of shared entanglement, whereas the original entanglement can be retrieved by adding a suitable phase object on the other beam. In our setup polarization and momentum entangled states are generated by spontaneous parametric downconversion and then purified using a programmable spatial light modulator, which may be also used to impose arbitrary space-dependent phase functions on the beams.
Original languageEnglish
Article number043817
Number of pages6
JournalPhysical Review A
Volume84
Issue number4
DOIs
Publication statusPublished - Oct 2011

Keywords

  • hidden-variable theories
  • dispersion cancellation
  • momentum entangled states

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