Abstract
Entanglement and quantum interference are key ingredients in a variety of quantum information processing tasks. Harnessing the generation and characterization of entanglement in high-dimensional state spaces is a necessary prerequisite towards practical quantum protocols. Here, we use quantum interference on a beam splitter to engineer hyperentanglement in polarization and discrete frequency degrees of freedom (DOF). We show how independent measurements of polarization and frequency DOF allow for the verification of high-dimensional entanglement in the combined state space. These results may indicate new paths towards practical exploitation of entanglement stored in multiple degrees of freedom, in particular in the context of high-dimensional quantum information processing protocols.
| Original language | English |
|---|---|
| Article number | 032302 |
| Number of pages | 9 |
| Journal | Physical Review A |
| Volume | 101 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 3 Mar 2020 |
Funding
Financial support from the Austrian Research Promotion Agency (FFG) Projects -Agentur fur Luft-und Raumfahrt (FFG-ALR Contracts No. 6238191 and No. 866025), the European Space Agency (ESA Contract No. 4000112591/14/NL/US), the Austrian Science Fund (FWF) through the START project Y879-N27, as well as the Austrian Academy of Sciences is gratefully acknowledged. This work was supported by the Fraunhofer Internal Programs under Grant No. Attract 066-604178.
Austrian Fields of Science 2012
- 103025 Quantum mechanics
- 103026 Quantum optics
Keywords
- PHOTONS
- COMMUNICATION
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