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Title: Quantum effects and nonclassicality in controlled open systems
Author: Li, Jie
Awarding Body: Queen's University Belfast
Current Institution: Queen's University Belfast
Date of Award: 2013
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All quantum systems are inevitably, to some extent, affected by the environment. The interaction with the environment makes the system gradually lose its quantum features and eventually behave classically. Understanding such quantum-to-classical transition is of importance to both fundamental research and applicative science. In this Thesis, we study this phenomenon in many controlled quantum open systems, ranging from trapped ions, to Cavity-QED, and optomechanical systems. The first key task of the Thesis is providing strategies to generate and enhance quantum effects and non-classicality in open systems so as to make them robust against environmental effects. The second goal is to engineer the structure of the environment so as to induce the feed-back of quantum coherence into the systems, and thus take advantage of non-Markovianity in such a way that the system keeps its quantum features as long as possible. Finally, we discuss a framework that links system-environment correlations with the violation of a temporal Bell inequality thus providing a way to experimentally characterize non-Markovianity.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available