Refine
Has Fulltext
- no (1)
Year of publication
- 2009 (1)
Document Type
- Article (1)
Language
- English (1)
Is part of the Bibliography
- yes (1)
Institute
We characterize the entanglement in position and momentum of photon pairs generated in type-II parametric down- conversion. Coincidence maps of the photon positions in the near-field and far-field planes are observed in two transverse dimensions using scanning fiber probes. We estimate the covariance matrix of an effective two-mode system and apply criteria for entanglement based on covariance matrices to certify space-momentum entanglement. The role of higher- order spatial modes for observing spatial entanglement between the two photons is discussed.