376 citations · 1.5k across the 42 of their papers we have counts for
42 papers
Cryptanalysis of a Practical Quantum Key Distribution With Polarization-Entangled Photons
Thomas Beth, Joern Mueller-Quade, Rainer Steinwandt
Recently, a quantum key exchange protocol has been described, which served as basis for securing an actual bank transaction by means of quantum cryptography [quant-ph/0404115]. Her…
New Construction of Mutually Unbiased Bases in Square Dimensions
Pawel Wocjan, Thomas Beth
We show that k=w+2 mutually unbiased bases can be constructed in any square dimension d=s^2 provided that there are w mutually orthogonal Latin squares of order s. The construction…
Gate simulation and lower bounds on the simulation time
Robert Zeier, Markus Grassl, Thomas Beth
Unitary operations are the building blocks of quantum programs. Our task is to design effcient or optimal implementations of these unitary operations by employing the intrinsic phy…
On optimal quantum codes
Markus Grassl, Thomas Beth, Martin Roetteler
We present families of quantum error-correcting codes which are optimal in the sense that the minimum distance is maximal. These maximum distance separable (MDS) codes are defined…
Quantum circuits for single-qubit measurements corresponding to platonic solids
Thomas Decker, Dominik Janzing, Thomas Beth
Each platonic solid defines a single-qubit positive operator valued measure (POVM) by interpreting its vertices as points on the Bloch sphere. We construct simple circuits for impl…
Synchronizing quantum clocks with classical one-way communication: Bounds on the generated entropy
Dominik Janzing, Thomas Beth
We describe separable joint states on bipartite quantum systems that cannot be prepared by any thermodynamically reversible classical one-way communication protocol. We argue that…