Practical challenges in quantum key distribution

By Eleni Diamanti, Hoi-Kwong Lo, Bing Qi, Zhiliang Yuan. npj Quantum Information, 2016

792 citations recorded by the source corpus.

Quantum key distribution (QKD) promises unconditional security in data communication and is currently being deployed in commercial applications. Nonetheless, before QKD can be widely adopted, it faces a number of important challenges such as secret key rate, distance, size, cost and practical security. Here, we survey those key challenges and the approaches that are currently being taken to address them.

Subfields: Artificial Intelligence, Computer Networks and Communications

View Paper: https://www.semanticscholar.org/paper/9195ce0692afee58dec42a80a4c00ff9f511b0fe

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Artificial Intelligence

1. Xiongfeng Ma
2. Stefano Pirandola
3. Stephanie Wehner
4. Hoi-Kwong Lo
5. Jian-Wei Pan
6. Feihu Xu
7. Qiang Zhang
8. Marco Tomamichel

In Computer Networks and Communications

1. Charles Ci Wen Lim
2. Roger Colbeck
3. Marco Tomamichel
4. Xiongfeng Ma

Citations in the corpus

• Continuous‐Variable Quantum Key Distribution with Gaussian Modulation—The Theory of Practical Implementations (2017, background): “Any experimental implementation of CV-QKD (or DV-QKD for that matter) needs to overcome a number of technological challenges in order to establish a satisfying secure-key rate over a given distance [79].”
• Progress in satellite quantum key distribution (2017, background): “However, significant challenges remain, such as in the need to decrease the classical communication between the two parties when establishing the final, secret key [22, 24, 25].”
• Secure quantum key distribution with realistic devices (2020, background): “A brief overview of the implementation security of QKD can be found in a survey article in (Lo et al., 2014) and an ETSI white paper15 by Lucamarini et al. A short overview of the practical challenges associated with QKD can be found in (Diamanti et al., 2016).”
• Quantum internet: A vision for the road ahead (2018, methodology): “QKD is commercially available at short distances by using standard telecom fibers (22), and a variety of protocols are known [(23), survey].”
• Provably secure and high-rate quantum key distribution with time-bin qudits (2017, positive): “To make QKD more relevant for widespread deployment in communication networks, there has been significant effort to increase the key generation rate ofQKDsystems, prioritizingmetropolitan distances (20 to 80 km) for large-scale implementation ofQKDnetworks (7).”
• Advances in quantum cryptography (2019, positive): “By contrast, quantum key distribution (QKD) offers the ultimate solution: restoring security and confidentiality by resorting to unbreakable principles of nature, such as the uncertainty principle or the monogamy of entanglement [27–30].”