Quantum Networks & Post-Quantum Cryptography
Quantum key distribution, repeaters and entanglement distribution, and the migration to NIST post-quantum standards (ML-KEM, ML-DSA, SLH-DSA).
Most influential
- Quantum cryptography: Public key distribution and coin tossing
When elementary quantum systems, such as polarized photons, are used to transmit digital information, the uncertainty principle gives rise to novel cryptographic phenomena unachievable with traditional transmission media, e.g. a communications channel on which it is impossible in principle to eavesdrop without a high probability of disturbing the transmissio…
Article8,296 citationsarXiv:2003.06557doi:10.1016/j.tcs.2014.05.025 - Advances in quantum cryptography
Quantum cryptography is arguably the fastest growing area in quantum information science. Novel theoretical protocols are designed on a regular basis, security proofs are constantly improving, and experiments are gradually moving from proof-of-principle lab demonstrations to in-field implementations and technological prototypes. In this review, we provide bo…
Article2,030 citationsarXiv:1906.01645doi:10.1364/aop.361502 - Measurement-Device-Independent Quantum Key Distribution
How to remove detector side channel attacks has been a notoriously hard problem in quantum cryptography. Here, we propose a simple solution to this problem---*measurement* device independent quantum key distribution. It not only removes all detector side channels, but also doubles the secure distance with conventional lasers. Our proposal can be implemented …
Article2,250 citationsarXiv:1109.1473doi:10.1103/physrevlett.108.130503 - Secure quantum key distribution with realistic devices
In principle, quantum key distribution (QKD) offers information-theoretic security based on the laws of physics. In practice, however, the imperfections of realistic devices might introduce deviations from the idealized models used in security analyses. Can quantum code-breakers successfully hack real systems by exploiting the side channels? Can quantum code…
Article1,558 citationsarXiv:1903.09051doi:10.1103/revmodphys.92.025002 - Satellite-to-ground quantum key distribution
Quantum key distribution (QKD) uses individual light quanta in quantum superposition states to guarantee unconditional communication security between distant parties. In practice, the achievable distance for QKD has been limited to a few hundred kilometers, due to the channel loss of fibers or terrestrial free space that exponentially reduced the photon rate…
Article1,821 citationsarXiv:1707.00542doi:10.1038/nature23655 - Advances in Quantum CryptographyArticle1,497 citations
- Fundamental limits of repeaterless quantum communications
Quantum communications promises reliable transmission of quantum information, efficient distribution of entanglement and generation of completely secure keys. For all these tasks, we need to determine the optimal point-to-point rates that are achievable by two remote parties at the ends of a quantum channel, without restrictions on their local operations and…
Article1,395 citationsarXiv:1510.08863doi:10.1038/ncomms15043 - Overcoming the rate-distance barrier of quantum key distribution without using quantum repeaters
Quantum key distribution (QKD) allows two distant parties to share encryption keys with security based on physical laws. Experimentally, it has been implemented with optical means, achieving key rates of 1.26 Megabit/s over 50 kilometres (km) of standard optical fibre and 1.16 bit/hour over 404 km of ultralow-loss fibre in a measurement-device-independent co…
Article1,246 citationsarXiv:1811.06826doi:10.1038/s41586-018-0066-6 - Secure quantum key distribution
Secure communication plays a crucial role in the Internet Age. Quantum mechanics may revolutionise cryptography as we know it today. In this Review Article, we introduce the motivation and the current state of the art of research in quantum cryptography. In particular, we discuss the present security model together with its assumptions, strengths and weaknes…
Article1,301 citationsarXiv:1505.05303doi:10.1038/nphoton.2014.149 - Quantum computational advantage with a programmable photonic processor
Abstract A quantum computer attains computational advantage when outperforming the best classical computers running the best-known algorithms on well-defined tasks. No photonic machine offering programmability over all its quantum gates has demonstrated quantum computational advantage: previous machines 1,2 were largely restricted to static gate sequences. E…
Abstract excerpt by Lars S. Madsen et al., CC-BY, https://doi.org/10.1038/s41586-022-04725-x; truncated.
Article1,020 citationsdoi:10.1038/s41586-022-04725-x - An integrated space-to-ground quantum communication network over 4,600 kilometresArticle1,043 citationsdoi:10.1038/s41586-020-03093-8
- Field test of quantum key distribution in the Tokyo QKD Network
A novel secure communication network with quantum key distribution in a metropolitan area is reported. Different QKD schemes are integrated to demonstrate secure TV conferencing over a distance of 45km, stable long-term operation, and application to secure mobile phones.
Article1,171 citationsarXiv:1103.3566doi:10.1364/oe.19.010387 - Hacking commercial quantum cryptography systems by tailored bright illumination
The peculiar properties of quantum mechanics allow two remote parties to communicate a private, secret key, which is protected from eavesdropping by the laws of physics. So-called quantum key distribution (QKD) implementations always rely on detectors to measure the relevant quantum property of single photons. Here we demonstrate experimentally that the dete…
Article1,143 citationsarXiv:1008.4593doi:10.1038/nphoton.2010.214 - An optical lattice clock with accuracy and stability at the 10−18 level
The exquisite control exhibited over quantum states of individual particles has revolutionized the field of precision measurement, as exemplified by the most accurate atomic clock realized in single trapped ions. Whereas many-atom lattice clocks have shown advantages in measurement precision over trapped-ion clocks, their accuracy has remained 20 times worse…
Article1,073 citationsarXiv:1309.1137doi:10.1038/nature12941 - Ground-to-satellite quantum teleportation
An arbitrary unknown quantum state cannot be precisely measured or perfectly replicated. However, quantum teleportation allows faithful transfer of unknown quantum states from one object to another over long distance, without physical travelling of the object itself. Long-distance teleportation has been recognized as a fundamental element in protocols such a…
Article964 citationsarXiv:1707.00934doi:10.1038/nature23675
Newest work
- Composable Device-Independent Quantum Digital SignaturesPreprintarXiv:2610.39360
- SeQUeNCe.DQC: Full-stack Simulation of Distributed Quantum ComputingPreprintarXiv:2610.39476
- Syndrome Trellis Decryption in Post-Quantum CryptographyPreprintarXiv:2610.39873
- Recurrent Bipartite Graph Neural Networks for QC-MDPC Error Decoding in McEliece CryptosystemsPreprintarXiv:2610.38479
- The use of post-quantum cryptography in the automotive contextPreprintarXiv:2610.38632
- Hyperentanglement-enabled Quantum Privacy Amplification for Classical-Quantum Coexistence in Fiber NetworksPreprintarXiv:2610.38645
- Key Evaluation of a Relativistic Quantum Key Distribution Over a Turbulent Free-space Optical ChannelPreprintarXiv:2610.38808
- Memory-Induced Limits on Entanglement DistributionPreprintarXiv:2610.38817
- Coherent Optical Control of a Single Donor Electron SpinPreprintarXiv:2610.36423
- QNETSIM for memory assisted design of satellite and hybrid quantum networksPreprintarXiv:2610.37204