858 citations
- National University of SingaporeSG14 papers
- Centre for Quantum TechnologiesSG8 papers
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- École Nationale Supérieure d'Électrotechnique, d'Électronique, d'Informatique, d'Hydraulique et des TélécommunicationsFR2 papers
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- Max Planck Institute for Intelligent SystemsDE2 papers
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8 papers · 1 filter
One-dimensional transport revisited: A simple and exact solution for phase disorder
Hui Khoon Ng, Berthold-Georg Englert
Disordered systems have grown in importance in the past decades, with similar phenomena manifesting themselves in many different physical systems. Because of the difficulty of the…
Raman transitions without adiabatic elimination: A simple and accurate treatment
Rui Han, Hui Khoon Ng, Berthold-Georg Englert
Driven Raman processes --- nearly resonant two-photon transitions through an intermediate state that is non-resonantly coupled and does not acquire a sizeable population --- are co…
Beyond adiabatic elimination: A hierarchy of approximations for multi-photon processes
Vanessa Paulisch, Rui Han, Hui Khoon Ng +1
In multi-level systems, the commonly used adiabatic elimination is a method for approximating the dynamics of the system by eliminating irrelevant, non-resonantly coupled levels. T…
Minimax mean estimator for the trine
Hui Khoon Ng, Kia Tan Benjamin Phuah, Berthold-Georg Englert
We explore the question of state estimation for a qubit restricted to the - plane of the Bloch sphere, with the trine measurement. In our earlier work [H. K. Ng and B.-G. Eng…
Optimizing F-measure: A Tale of Two Approaches
Ye Nan, Kian Ming Chai, Wee Sun Lee +1
F-measures are popular performance metrics, particularly for tasks with imbalanced data sets. Algorithms for learning to maximize F-measures follow two approaches: the empirical ut…
A Split-Merge Framework for Comparing Clusterings
Qiaoliang Xiang, Qi Mao, Kian Ming Chai +3
Clustering evaluation measures are frequently used to evaluate the performance of algorithms. However, most measures are not properly normalized and ignore some information in the…