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 | |
| Publication status | Published - 2011 Jul 1 |
Keywords
- heat capacity
- quantum phase transitions
- thermal entanglement
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Engineering (miscellaneous)
Fingerprint 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
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