Quantum Science Seminar #52 - Quantum Communication

"Secure communications in quantum networks"

Eleni Diamanti - Sorbonne Université
(CNRS - Paris - France)

Quantum technologies have the potential to improve in an unprecedented way the security and efficiency of communications in network infrastructures. We discuss the current landscape in quantum communication and cryptography, and focus in particular on recent photonic implementations, using encoding in discrete or continuous properties of light, of central quantum network protocols, enabling secret key distribution, verification of multiparty entanglement and transactions of quantum money, with security guarantees impossible to achieve with only classical resources. We also describe current challenges in this field and our efforts towards the miniaturization of the developed photonic systems, their integration into telecommunication network infrastructures, including with satellite links, as well as the practical demonstration of novel protocols featuring a quantum advantage for a wide range of tasks. These advances enrich the resources and applications of the emerging quantum networks that will play a central role in the context of future global-scale quantum-safe communications.


[1] Eleni Diamanti, Hoi-Kwong Lo, Bing Qi, and Zhiliang Yuan

"Practical challenges in quantum key distribution"

npq Quantum Information 2 16025 (2016)

[2] Stephanie Wehner, David Elkouss, and Ronald Hanson

"Quantum internet: A vision for the road ahead"

Science 362, eaam9288 (2018)

[3] Federico Centrone, Niraj Kumar, Eleni Diamanti, and Iordanis Kerenidis

"Experimental demonstration of quantum advantage for NP verification with limited information"

Nature Communications 12, 850 (2021)

Access the live talk at 17.00 CEST or the recording afterwards via this link:


Here you can find the recording of the last lecture by John Doyle about "Laser Cooling of Polyatomic Molecules".

Quantum Science Seminar #51 - John Doyle

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