Heat capacity and entanglement measure in a simple two-qubit model

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

doi:10.1007/s10946-011-9224-0

Heat capacity and entanglement measure in a simple two-qubit model

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

School of Advanced Science and Engineering

Research output: Contribution to journal › Article

2 Citations (Scopus)

Abstract

A simple two-qubit model showing quantum phase transitions as a consequence of ground-state-level crossings is studied in detail. Using the system's concurrence as an entanglement measure and heat capacity as a marker of thermodynamical properties, we obtain an analytical expression giving the latter in terms of the former. A protocol allowing an experimental measure of entanglement is then presented and compared with a related proposal recently reported by Wieśniak, Vedral, and Brukner.

Original language	English
Pages (from-to)	362-371
Number of pages	10
Journal	Journal of Russian Laser Research
Volume	32
Issue number	4
DOIs	https://doi.org/10.1007/s10946-011-9224-0
Publication status	Published - 2011 Jul 1

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Keywords

heat capacity
quantum phase transitions
thermal entanglement

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)

Cite this

Leggio, B., Napoli, A., Nakazato, H., & Messina, A. (2011). Heat capacity and entanglement measure in a simple two-qubit model. Journal of Russian Laser Research, 32(4), 362-371. https://doi.org/10.1007/s10946-011-9224-0

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10.1007/s10946-011-9224-0