HELIOS · Hybrid Entanglement of Light for Interconnected Optical Networks
Horizon 2020 — Marie Skłodowska-Curie Actions
- Duration
- 2017-06-01 → 2019-05-31
- EU contribution
- €173,076
- Participants
- 1
- Scheme
- MSCA-IF-EF-ST
Lines connect the coordinator with its partners.
Results in brief
Hybrid Entanglement of Light for Interconnected Optical Networks
The project HELIOS realized at Laboratoire Kastler Brossel in Paris focussed on the field of hybrid quantum optics, based on the unique experimental endeavours at the host institution where one of the first resources of hybrid entanglement of light was originally developed. The overall ambition of the project has been to introduce these novel hybrid technologies into the broader, developing framework of quantum networks. By combining the wave- and particle-like characters of light into a joint entity spread across separate nodes, it has been possible to envision fundamental quantum communication protocols between remote parties operating on different quantum logic – namely, continuous and discrete variable encodings. Two major examples were demonstrated during the project. The first is a quantum steering experiment for one-sided device independent quantum communication between two parties, which has applications in various protocols such as quantum key distribution, randomness generation and entanglement verification. The second is an entanglement swapping experiment required for establishing hybrid links between remote nodes, an important step towards quantum repeaters in heterogeneous networks.
Data: CORDIS, © European Union
Project objective
In quantum information science and technology, two main encodings of information are traditionally used: a ‘discrete-variable’ (DV) approach, based for instance on single photons, and a ‘continuous-variable’ (CV) one, which relies on continuous degrees of freedom such as amplitude and phase of a light field. A mostly unexplored area combines these two different approaches to create ‘optical hybrid schemes’. Recently, entanglement between particle-like and wave-like optical qubits, i.e. CV-DV entanglement, has been generated for the first time by the host group. This resource holds the promise of heterogeneous quantum networks where the two encodings can be combined or interconverted. In this context, the proposed research activities aim at investigating, harnessing, and using the potential of this yet unexplored photonic resource.
Original text from CORDIS.
Participants
- SORBONNE UNIVERSITE · ParisCoordinatorFrance
Links
Data: CORDIS, © European Union