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

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


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 languageEnglish
Pages (from-to)362-371
Number of pages10
JournalJournal of Russian Laser Research
Issue number4
Publication statusPublished - 2011 Jul


  • heat capacity
  • quantum phase transitions
  • thermal entanglement

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)


Dive into the research topics of 'Heat capacity and entanglement measure in a simple two-qubit model'. Together they form a unique fingerprint.

Cite this