Thermal Entanglement Properties in Two Qubits One-Axis Spin Squeezing Model with an External Magnetic Field
| Autor: | Ahmad Akhound, Saeed Haddadi |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Physics
Quantum discord Physics and Astronomy (miscellaneous) 010308 nuclear & particles physics General Mathematics Quantum correlation Limiting case (mathematics) Concurrence 01 natural sciences Magnetic field Quantum mechanics Qubit 0103 physical sciences 010306 general physics Ground state Spin-½ |
| Zdroj: | International Journal of Theoretical Physics. 58:399-402 |
| ISSN: | 1572-9575 0020-7748 |
| DOI: | 10.1007/s10773-018-3941-x |
| Popis: | In a recent article in this journal Guo-Hui (Int. J. Theor. Phys. 56, 600, 2017) has investigated the quantum correlation properties in the two qubits one-axis spin squeezing model with an external magnetic field by means of concurrence (C) and quantum discord (QD) criteria. We are to reveal numerically and analytically that in the limiting case T→ 0 (ground state) the sudden disappearance phenomenon (SDP) does not occur in the behavior of C and the values obtained for C are incorrect. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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