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Ensemble versus Individual System in Quantum Optics
Author(s) -
Hegerfeldt Gerhard C.
Publication year - 1998
Publication title -
fortschritte der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.469
H-Index - 71
eISSN - 1521-3978
pISSN - 0015-8208
DOI - 10.1002/(sici)1521-3978(199811)46:6/8<595::aid-prop595>3.0.co;2-m
Subject(s) - quantum , jump , quantum optics , physics , quantum mechanics , open quantum system , statistical physics , quantum system , atom optics , classical mechanics , theoretical physics , computer science
Modern techniques allow experiments on a single atom or system, with new phenomena and new challenges for the theoretician. We discuss what quantum mechanics has to say about a single system. The quantum jump approach as well as the role of quantum trajectories are outlined and a rather sophisticated example is given.