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quant-ph2005
Energy and multipartite entanglement in multidimensional and frustrated spin models
Otfried Gühne, Geza Toth
We investigate the relation between the entanglement properties of a quantum state and its energy for macroscopic spin models. To this aim, we develop a general method to compute e…
quant-ph2005
Entanglement verification for quantum key distribution systems with an underlying bipartite qubit-mode structure
Johannes Rigas, Otfried Gühne, Norbert Lütkenhaus
We consider entanglement detection for quantum key distribution systems that use two signal states and continuous variable measurements. This problem can be formulated as a separab…