Multiplex · Spatial Division Multiplexing for Cold-Atom-Based Quantum Memory
Horizon 2020 — Marie Skłodowska-Curie Actions
- Duration
- 2021-03-01 → 2023-02-28
- EU contribution
- €196,708
- Participants
- 1
- Scheme
- MSCA-IF
Lines connect the coordinator with its partners.
Results in brief
Spatial Division Multiplexing for Cold-Atom-Based Quantum Memory
The project originally aimed at adapting and exploiting space division multiplexing (SDM), a technology which recently received a lot of attention in telecommunication technologies as a method for increasing communication channels data capacity, to demonstrate the parallel storage of a large number of photonic qubits in a quantum memory based on a cold atomic ensemble with near-unity efficiency. The project's approach stood out in that, by using SDM, the parallelization of the storage protocol could be done while preserving the memory efficiency for each spatial mode. This, in turn, circumvents the typical tradeoff between increased rate and memory efficiency, as often encountered when resorting to other multiplexing methods. The project unfortunately failed to achieve critical objectives or milestones and, as such, has been severely delayed. However, the work carried out within this fellowship serves the scientific community as a whole and has an important impact on the technological development of quantum memories from an industrial standpoint. The demonstration of a multiplexed protocol compatible with atom-based quantum memories is valuable for industries hoping to transfer quantum information over long distances.
Data: CORDIS, © European Union
Project objective
Optical quantum memory, a device that enables the storage and retrieval of photonic qubits, is an essential component for a wide range of applications in quantum information science. The host demonstrated state-of-the-art memory based on large ensembles of cold atoms, with a storage-and-retrieval efficiency close to 90% for single photons. With this milestone reached, a timely and crucial effort is to develop multiplexed memories. This, in turn, should lead to higher-capacity network channels, bringing quantum networks one step closer to reality. In this context, the proposed research will uniquely adapt and exploit Space Division Multiplexing, a booming approach in classical telecommunications, to create and harness parallelized quantum links. The fellow, with a strong background in atomic physics and light shaping, will use his expertise to develop the project efficiently while expanding his skill-set to quantum information networks and developing his independence and leadership during the fellowship.
Original text from CORDIS.
Participants
- SORBONNE UNIVERSITE · ParisCoordinatorFrance
Links
Data: CORDIS, © European Union