منابع مشابه
Entanglement in Many-Body Systems
The recent interest in aspects common to quantum information and condensed matter has prompted a flory of activity at the border of these disciplines that were far distant untill few years ago. Numerous interesting questions have been addressed so far. Here we review an important part of this field, the properties of the entanglement in many-body systems. We discuss the zero and finite temperat...
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We explore the relation between entanglement entropy of quantum many-body systems and the distribution of corresponding, properly selected, observables. Such a relation is necessary to actually measure the entanglement entropy. We show that, in general, the Shannon entropy of the probability distribution of certain symmetry observables gives a lower bound to the entropy. In some cases this boun...
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This article is intended to be a pedagogical review of the recent studies of quantum entanglement in many-body systems. The basic concepts of entanglement for pure and mixed states are introduced in an intuitive approach. We will see that in the weakly interacting BEC and BCS superconductivity theories, the pair of particles with momentum k and −k are entangled but they are not correlated with ...
متن کاملMany-body protected entanglement generation in interacting spin systems
A. M. Rey, L. Jiang, M. Fleischhauer, E. Demler, and M. D. Lukin Institute for Theoretical Atomic, Molecular and Optical Physics, Cambridge, Massachusetts 02138, USA Physics Department, Harvard University, Cambridge, Massachusetts 02138, USA Fachbereich Physik, Technische Universitat Kaiserslautern, D-67663 Kaiserslautern, Germany Received 4 January 2008; revised manuscript received 23 March 20...
متن کاملEntanglement replication in driven dissipative many-body systems.
We study the dissipative dynamics of two independent arrays of many-body systems, locally driven by a common entangled field. We show that in the steady state the entanglement of the driving field is reproduced in an arbitrarily large series of inter-array entangled pairs over all distances. Local nonclassical driving thus realizes a scale-free entanglement replication and long-distance entangl...
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ژورنال
عنوان ژورنال: Reviews of Modern Physics
سال: 2008
ISSN: 0034-6861,1539-0756
DOI: 10.1103/revmodphys.80.517