| Literature DB >> 28143940 |
Armin Hochrainer1,2, Mayukh Lahiri3,2, Radek Lapkiewicz3,2, Gabriela Barreto Lemos3,2, Anton Zeilinger1,2.
Abstract
We report a measurement of the transverse momentum correlation between two photons by detecting only one of them. Our method uses two identical sources in an arrangement in which the phenomenon of induced coherence without induced emission is observed. In this way, we produce an interference pattern in the superposition of one beam from each source. We quantify the transverse momentum correlation by analyzing the visibility of this pattern. Our approach might be useful for the characterization of correlated photon pair sources and may lead to an experimental measure of continuous variable entanglement, which relies on the detection of only one of two entangled particles.Keywords: complementarity principle; photon indistinguishability; photonic spatial modes; quantum correlations; single-photon interference
Year: 2017 PMID： 28143940 PMCID： PMC5320961 DOI： 10.1073/pnas.1620979114
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN： 0027-8424 Impact factor: 11.205