Heat Capacity and Entanglement Measure in a simple two-qubit model

B. Leggio; A. Napoli; H. Nakazato; A. Messina

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arXiv · 1104.1116

Heat Capacity and Entanglement Measure in a simple two-qubit model

B. Leggio·A. Napoli·H. Nakazato·A. Messina

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Abstract

A simple two-qubit model showing Quantum Phase Transitions as a consequence of ground state level crossings is studied in detail. Using the Concurrence of the system as an entanglement measure and heat capacity as a marker of thermodynamical properties, an analytical expression giving the latter in terms of the former is obtained. A protocol allowing an experimental measure of entanglement is then presented and compared with a related proposal recently reported by Wie\'sniak, Vedral and Brukner

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B. Leggio, A. Napoli, H. Nakazato, A. Messina. 2011-04-06. Heat Capacity and Entanglement Measure in a simple two-qubit model. https://arxiv.org/abs/1104.1116

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