13 citations · 42 across the 9 of their papers we have counts for
20 papers · 1 filter
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…
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…
Two QCMA-complete problems
Pawel Wocjan, Dominik Janzing, Thomas Beth
QMA and QCMA are possible quantum analogues of the complexity class NP. In QCMA the verifier is a quantum program and the proof is classical. In contrast, in QMA the proof is also…
Cooling and Low Energy State Preparation for 3-local Hamiltonians are FQMA-complete
Dominik Janzing, Pawel Wocjan, Thomas Beth
We introduce the quantum complexity class FQMA. This class describes the complexity of generating a quantum state that serves as a witness for a given QMA problem. In a certain sen…