Quantum Paths

This volume is a collection of original articles or reprints of journal papers and book chapters written or inspired by Berge Englert, as well as essays recounting Professor Englert's impact on all the contributors' scientific careers and lives in general. The scientific articles span a wide range of topics in quantum physics -- from quantum optics, foundations of quantum physics, to quantum information -- reflecting his influential impact. The personal essays offer a rare insight into the man behind the science -- the essence of who he is. Each article in the book is preceded by a commentary from the contributor who wrote or suggested the inclusion of the article, highlighting its significance. The collection was created in relation to a conference, BergeFest, held in UTown, National University of Singapore, in April 2014, in celebration of the 60th birthday of Professor Berge Englert.