169 citations · 342 across the 11 of their papers we have counts for
12 papers
One-shot decoupling
Frédéric Dupuis, Mario Berta, Jürg Wullschleger +1
If a quantum system A, which is initially correlated to another system, E, undergoes an evolution separated from E, then the correlation to E generally decreases. Here, we study th…
Bitwise Quantum Min-Entropy Sampling and New Lower Bounds for Random Access Codes
Jürg Wullschleger
Min-entropy sampling gives a bound on the min-entropy of a randomly chosen subset of a string, given a bound on the min-entropy of the whole string. König and Renner showed a min-e…
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…
Unconditional security from noisy quantum storage
Robert Koenig, Stephanie Wehner, Juerg Wullschleger
We consider the implementation of two-party cryptographic primitives based on the sole assumption that no large-scale reliable quantum storage is available to the cheating party. W…
Bit Commitment from Non-Signaling Correlations
Severin Winkler, Juerg Wullschleger, Stefan Wolf
Central cryptographic functionalities such as encryption, authentication, or secure two-party computation cannot be realized in an information-theoretically secure way from scratch…
Composable Security in the Bounded-Quantum-Storage Model
Stephanie Wehner, Jürg Wullschleger
We present a simplified framework for proving sequential composability in the quantum setting. In particular, we give a new, simulation-based, definition for security in the bounde…