159 citations · 503 across the 17 of their papers we have counts for
17 papers
Reproducible Builds for Quantum Computing
Iyán Méndez Veiga, Esther Hänggi
Reproducible builds are a set of software development practices that establish an independently verifiable path from source code to binary artifacts, helping to detect and mitigate…
Reproducible Builds and Insights from an Independent Verifier for Arch Linux
Joshua Drexel, Esther Hänggi, Iyán Méndez Veiga
Supply chain attacks have emerged as a prominent cybersecurity threat in recent years. Reproducible and bootstrappable builds have the potential to reduce such attacks significantl…
Impossibility of Quantum Private Queries
Esther Hänggi, Severin Winkler
Symmetric private information retrieval is a cryptographic task allowing a user to query a database and obtain exactly one entry without revealing to the owner of the database whic…
Lower Bounds for Quantum Secure Function Evaluation Reductions
Esther Hänggi, Severin Winkler
One-sided output secure function evaluation is a cryptographic primitive where the two mutually distrustful players, Alice and Bob, both have a private input to a bivariate functio…
Security for adversarial wiretap channels
Esther Hänggi, Iyán Méndez Veiga, Ligong Wang
We consider the wiretap channel, where the individual channel uses have memory or are influenced by an adversary. We analyze the explicit and computationally efficient construction…
Fast Single Photon Detectors and real-time Key Distillation: Enabling High Secret Key Rate QKD Systems
Fadri Grünenfelder, Alberto Boaron, Matthieu Perrenoud +11
Quantum Key Distribution has made continuous progress over the last 20 years and is now commercially available. However, the secret key rates (SKR) are still limited to a few Mbps.…
A Structured Survey of Quantum Computing for the Financial Industry
Franco D. Albareti, Thomas Ankenbrand, Denis Bieri +4
Quantum computers can solve specific problems that are not feasible on "classical" hardware. Harvesting the speed-up provided by quantum computers therefore has the potential to ch…
A violation of the uncertainty principle implies a violation of the second law of thermodynamics
Esther Hänggi, Stephanie Wehner
Uncertainty relations state that there exist certain incompatible measurements, to which the outcomes cannot be simultaneously predicted. While the exact incompatibility of quantum…
Towards the Impossibility of Non-Signalling Privacy Amplification from Time-Like Ordering Constraints
Rotem Arnon, Esther Hänggi, Amnon Ta-Shma
In the past few years there was a growing interest in proving the security of cryptographic protocols, such as key distribution protocols, from the sole assumption that the systems…
The Link between Entropic Uncertainty and Nonlocality
Marco Tomamichel, Esther Hänggi
Two of the most intriguing features of quantum physics are the uncertainty principle and the occurrence of nonlocal correlations. The uncertainty principle states that there exist…
Nonlocality is transitive
Sandro Coretti, Esther Hänggi, Stefan Wolf
We show a transitivity property of nonlocal correlations: There exist tripartite nonsignaling correlations of which the bipartite marginals between A and B as well as B and C are n…
Device-independent quantum key distribution
Esther Hänggi
In this thesis, we study two approaches to achieve device-independent quantum key distribution: in the first approach, the adversary can distribute any system to the honest parties…
Tight bounds for classical and quantum coin flipping
Esther Hänggi, Jürg Wullschleger
Coin flipping is a cryptographic primitive for which strictly better protocols exist if the players are not only allowed to exchange classical, but also quantum messages. During th…
Device-Independent Quantum Key Distribution with Commuting Measurements
Esther Hänggi, Renato Renner
We consider quantum key distribution in the device-independent scenario, i.e., where the legitimate parties do not know (or trust) the exact specification of their apparatus. We sh…
Quantum Cryptography Based Solely on Bell's Theorem
Esther Hänggi, Renato Renner, Stefan Wolf
Information-theoretic key agreement is impossible to achieve from scratch and must be based on some - ultimately physical - premise. In 2005, Barrett, Hardy, and Kent showed that u…
The impossibility of non-signaling privacy amplification
Esther Hänggi, Renato Renner, Stefan Wolf
Barrett, Hardy, and Kent have shown in 2005 that protocols for quantum key agreement exist the security of which can be proven under the assumption that quantum or relativity theor…
The non-locality of n noisy Popescu-Rohrlich boxes
Matthias Fitzi, Esther Hänggi, Valerio Scarani +1
We quantify the amount of non-locality contained in n noisy versions of so-called Popescu-Rohrlich boxes (PRBs), i.e., bipartite systems violating the CHSH Bell inequality maximall…