736 citations · 3.5k across the 116 of their papers we have counts for
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Efficient quantum key distribution with trines of reference-frame-free qubits
Gelo Tabia, Berthold-Georg Englert
We propose a rotationally-invariant quantum key distribution scheme that uses a pair of orthogonal qubit trines, realized as mixed states of three physical qubits. The measurement…
Optimal Lewenstein-Sanpera decomposition of two-qubit states using Semidefinite Programming
Guo Chuan Thiang, Philippe Raynal, Berthold-Georg Englert
We use the language of semidefinite programming and duality to derive necessary and sufficient conditions for the optimal Lewenstein-Sanpera Decomposition (LSD) of 2-qubit states.…
Average transmission probability of a random stack
Yin Lu, Christian Miniatura, Berthold-Georg Englert
The transmission through a stack of identical slabs that are separated by gaps with random widths is usually treated by calculating the average of the logarithm of the transmission…
Product measurements and fully symmetric measurements in qubit-pair tomography: A numerical study
Yong Siah Teo, Huangjun Zhu, Berthold-Georg Englert
State tomography on qubit pairs is routinely carried out by measuring the two qubits separately, while one expects a higher efficiency from tomography with highly symmetric joint m…
Ultracold Fermions in a Graphene-Type Optical Lattice
Kean Loon Lee, Benoit Gremaud, Rui Han +2
Some important features of the graphene physics can be reproduced by loading ultracold fermionic atoms in a two-dimensional optical lattice with honeycomb symmetry and we address h…
Minimal tomography with entanglement witnesses
Huangjun Zhu, Yong Siah Teo, Berthold-Georg Englert
We introduce informationally complete measurements whose outcomes are entanglement witnesses and so answer the question of how many witnesses need to be measured to decide whether…