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A local area quantum teleportation network based on an array of electrically activated graphene waveguides
Optics Express
|October 13, 2022
Summary
Researchers developed a method for creating continuous variable (CV) multipartite entangled states using graphene waveguides. This breakthrough enables secure quantum teleportation networks, even with signal loss.
Area of Science:
- Quantum physics
- Condensed matter physics
- Nanotechnology
Background:
- Multipartite entangled states are crucial for quantum information processing.
- Graphene's unique electronic properties offer potential for quantum applications.
- Continuous variable (CV) entanglement is essential for quantum communication protocols.
Purpose of the Study:
- To propose a novel scheme for generating CV multipartite entangled states.
- To demonstrate the application of these states in quantum teleportation networks.
- To achieve secure quantum communication resilient to signal losses.
Main Methods:
- Utilizing an array of plasmonic graphene waveguides.
- Activating waveguides with nonclassical driving microwave modes.
- Exploiting the interaction of two light fields coupled to microwave modes.
Main Results:
- Generation of arbitrary multipartite Gaussian entangled states.
- Successful illustration of a quantum teleportation network.
- Achieving a fidelity above 2/3 for coherent state teleportation across remote nodes.
Conclusions:
- The proposed scheme offers a viable method for generating CV multipartite entangled states.
- The demonstrated quantum teleportation network provides a foundation for secure quantum communication.
- The system's resilience to losses enhances the practicality of quantum networking.
