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

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

2011-04-06

arxiv.org/abs/1104.1116v1

Physics

Quantum Physics

7 pages, 3 figures

Scientific paper

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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