736 citations · 3.5k across the 116 of their papers we have counts for
7 papers · 2 filters
Adaptive schemes for incomplete quantum process tomography
Yong Siah Teo, Berthold-Georg Englert, Jaroslav Rehacek +1
We propose an iterative algorithm for incomplete quantum process tomography, with the help of quantum state estimation, based on the combined principles of maximum-likelihood and m…
Comment on "Minimum Uncertainty and Entanglement"
Berthold-Georg Englert
Dass, Qureshi, and Sheel conjecture that the lower bound in the Heisenberg-Robertson uncertainty relation cannot be reached in mixed states. The conjecture is wrong.
SeCQC: An open-source program code for the numerical Search for the classical Capacity of Quantum Channels
Jiangwei Shang, Kean Loon Lee, Berthold-Georg Englert
SeCQC is an open-source program code which implements a Numerical Search for the classical Capacity of Quantum Channels (SeCQC) by using an iterative method. Given a quantum channe…
Quantum State Tomography with Joint SIC POMs and Product SIC POMs
Huangjun Zhu, Berthold-Georg Englert
We introduce random matrix theory to study the tomographic efficiency of a wide class of measurements constructed out of weighted 2-designs, including symmetric informationally com…
Mutually unbiased bases in dimension six: The four most distant bases
Philippe Raynal, Xin Lü, Berthold-Georg Englert
We consider the average distance between four bases in dimension six. The distance between two orthonormal bases vanishes when the bases are the same, and the distance reaches its…
Test-State Approach to the Quantum Search Problem
Arun Sehrawat, Le Huy Nguyen, Berthold-Georg Englert
The search for "a quantum needle in a quantum haystack" is a metaphor for the problem of finding out which one of a permissible set of unitary mappings---the oracles---is implement…