108 citations · 370 across the 14 of their papers we have counts for
14 papers
The Structure of Circle Graph States
Frederik Hahn, Rose McCarty, Hendrik Poulsen Nautrup +1
Circle graph states are a structurally important family of graph states. The family's entanglement is a priori high enough to allow for universal measurement-based quantum computat…
Distinguishing Graph States by the Properties of Their Marginals
Lina Vandré, Jarn de Jong, Frederik Hahn +3
Graph states are a class of multi-partite entangled quantum states that are ubiquitous in quantum information. We study equivalence relations between graph states under local unita…
The Foliage Partition: An Easy-to-Compute LC-Invariant for Graph States
Adam Burchardt, Frederik Hahn
This paper introduces the foliage partition, an easy-to-compute LC-invariant for graph states, of computational complexity in the number of qubits. Inspired by t…
ReQuSim: Faithfully simulating near-term quantum repeaters
Julius Wallnöfer, Frederik Hahn, Fabian Wiesner +2
Quantum repeaters have long been established to be essential for distributing entanglement over long distances. Consequently, their experimental realization constitutes a core chal…
Extracting GHZ states from linear cluster states
Jarn de Jong, Frederik Hahn, Nikolay Tcholtchev +2
Quantum information processing architectures typically only allow for nearest-neighbour entanglement creation. In many cases, this prevents the direct generation of GHZ states, whi…
Experimental anonymous conference key agreement using linear cluster states
Lukas Rückle, Jakob Budde, Jarn de Jong +3
Multipartite entanglement enables secure and anonymous key exchange between multiple parties in a network. In particular Greenberger-Horne-Zeilinger (GHZ) states have been introduc…
Anonymous conference key agreement in linear quantum networks
Jarn de Jong, Frederik Hahn, Jens Eisert +2
Sharing multi-partite quantum entanglement between parties allows for diverse secure communication tasks to be performed. Among them, conference key agreement (CKA), an extension o…
Limitations of nearest-neighbour quantum networks
Frederik Hahn, Axel Dahlberg, Jens Eisert +1
Quantum communication research has in recent years shifted to include multi-partite networks for which questions of quantum network routing naturally emerge. To understand the pote…
Secure Anonymous Conferencing in Quantum Networks
Federico Grasselli, Gláucia Murta, Jarn de Jong +4
Users of quantum networks can securely communicate via so-called (quantum) conference key agreement --making their identities publicly known. In certain circumstances, however, com…
Simulating quantum repeater strategies for multiple satellites
Julius Wallnöfer, Frederik Hahn, Mustafa Gündoğan +5
A global quantum repeater network involving satellite-based links is likely to have advantages over fiber-based networks in terms of long-distance communication, since the photon l…
Anonymous and secret communication in quantum networks
Christopher Thalacker, Frederik Hahn, Jarn de Jong +2
Secure communication is one of the key applications of quantum networks. In recent years, following the demands for identity protection in classical communication protocols, the ne…
Anonymous Quantum Conference Key Agreement
Frederik Hahn, Jarn de Jong, Anna Pappa
Conference Key Agreement (CKA) is a cryptographic effort of multiple parties to establish a shared secret key. In future quantum networks, generating secret keys in an anonymous wa…
Anonymous Conference Key Agreement in Quantum Networks
Frederik Hahn, Jarn de Jong, Christopher Thalacker +3
Quantum Conference Key Agreement (CKA) is a cryptographic effort of multiple parties to establish a shared secret key. While bipartite quantum key distribution protocols are also u…
Quantum network routing and local complementation
F. Hahn, A. Pappa, J. Eisert
Quantum communication between distant parties is based on suitable instances of shared entanglement. For efficiency reasons, in an anticipated quantum network beyond point-to-point…