Orbital Angular Momentum States Enabling Fiber-based High-dimensional Quantum Communication
By Daniele Cozzolino, Davide Bacco, B. D. Lio, K. Ingerslev, Yunhong Ding, K. Dalgaard, Poul Kristensen, M. Galili, K. Rottwitt, Siddharth Ramachandran and 1 more. Physical Review Applied, 2018
146 citations recorded by the source corpus.
Quantum networks are the ultimate target in quantum communication, where many connected users can share information carried by quantum systems. The keystones of such structures are the reliable generation, transmission and manipulation of quantum states. Two-dimensional quantum states, qubits, are steadily adopted as information units. However, high-dimensional quantum states, qudits, constitute a richer resource for future quantum networks, exceeding the limitations imposed by the ubiquitous qubits. The generation and manipulation of such $D$-level systems have been improved over the last ten years, but their reliable transmission between remote locations remains the main challenge. Here, we show how a recent air-core fiber supporting orbital angular momentum (OAM) modes can be exploited to faithfully transmit $D$-dimensional states. Four OAM quantum states and their superpositions are created, propagated in a 1.2 km long fiber and detected with high fidelities. In addition, three quantum key distribution (QKD) protocols are implemented as concrete applications to assert the practicality of our results. This experiment enhances the distribution of high-dimensional quantum states, attesting the orbital angular momentum as vessel for the future quantum network.
Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/8735bef015b7e9ed12941358995df7c9be24bb5c
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In Atomic and Molecular Physics, and Optics
Citations in the corpus
- High‐Dimensional Quantum Communication: Benefits, Progress, and Future Challenges (2019, background): “Thus, there might be cases where highdimensional states perform better than qubits also in terms of transmission distance [44,45].”