Entanglement between noncomplementary parts of many-body systems /
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| Author / Creator: | Wichterich, Hannu Christian. |
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| Imprint: | Berlin ; Heidelberg ; New York : Springer, c2011. |
| Description: | 1 online resource (xi, 113 p.) |
| Language: | English |
| Series: | Springer theses Springer theses. |
| Subject: | |
| Format: | E-Resource Dissertations Book |
| URL for this record: | http://pi.lib.uchicago.edu/1001/cat/bib/8898343 |
| Summary: | This thesis investigates the structure and behaviour of entanglement, the purely quantum mechanical part of correlations, in many-body systems, employing both numerical and analytical techniques at the interface of condensed matter theory and quantum information theory. Entanglement can be seen as a precious resource which, for example, enables the noiseless and instant transmission of quantum information, provided the communicating parties share a sufficient "amount" of it. Furthermore, measures of entanglement of a quantum mechanical state are perceived as useful probes of collective properties of many-body systems. For instance, certain measures are capable of detecting and classifying ground-state phases and, particularly, transition (or critical) points separating such phases. Chapters 2 and 3 focus on entanglement in many-body systems and its use as a potential resource for communication protocols. They address the questions of how a substantial amount of entanglement can be established between distant subsystems, and how efficiently this entanglement could be "harvested" by way of measurements. The subsequent chapters 4 and 5 are devoted to universality of entanglement between large collections of particles undergoing a quantum phase transition, where, despite the enormous complexity of these systems, collective properties including entanglement no longer depend crucially on the microscopic details. |
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| Physical Description: | 1 online resource (xi, 113 p.) |
| Bibliography: | Includes bibliographical references. |
| ISBN: | 9783642193422 3642193420 |