Fast imaging of multimode transverse–spectral correlations for twin photons
Abstract
Hyperentangled photonic states—exhibiting nonclassical correlations in several degrees of freedom—offer improved performance of quantum optical communication and computation schemes. Experimentally, a hyperentanglement of transverse-wave-vector and spectral modes can be obtained in a straightforward way with multimode parametric single-photon sources. Nevertheless, experimental characterization of such states remains challenging. Not only single-photon detection with high spatial resolution—a single-photon camera—is required, but also a suitable mode converter to observe the spectral–temporal degree of freedom. We experimentally demonstrate a measurement of full four-dimensional transverse-wave-vector–spectral correlations between pairs of photons produced in noncollinear spontaneous parametric downconversion. Utilization of a custom ultrafast single-photon camera provides high resolution and a short measurement time.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 17, 2021
- Source ID
- 10.1364/ol.417658
Entities
People
- Michał Lipka
- Michał Parniak
Organizations
- European Regional Development Fund
- Foundation for Polish Science
- Ministry of Science and Higher Education
- Office of Naval Research
- University of Copenhagen
- University of Warsaw