Heat Capacity and Entanglement Measure in a simple two-qubit model
Leggio, B. · Napoli, A. · Nakazato, H. · Messina, A.
Original · EN
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 Wieśniak, Vedral and Brukner
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