Nonclassical Correlations in a Three-Mode Continuous-Variable System
| Autor: | M. El Baz, Fatima-Zahra Siyouri, Yassine Hassouni, Mustapha Ziane |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
Quantum discord Perturbation (astronomy) Monotonic function Quantum Physics Quantum entanglement 01 natural sciences Atomic and Molecular Physics and Optics 010305 fluids & plasmas Quantum mechanics 0103 physical sciences Quantum system Coherent states Quantum information 010306 general physics Engineering (miscellaneous) Quantum |
| Zdroj: | Journal of Russian Laser Research. 38:27-36 |
| ISSN: | 1573-8760 1071-2836 |
| DOI: | 10.1007/s10946-017-9617-9 |
| Popis: | We investigate a standard measure of quantum discord for tripartite coherent states of the Greenberger–Horne–Zeilinger (GHZ) type. Furthermore, we check the monotonicity of a superquantum discord according to weak quantum measurements. We accomplish our study by manipulating the amount of quantum information lost during the perturbation of the quantum system and controlling the measurement strength. In addition, we calculate the entanglement of the system under study. Finally we compare the behavior of the three correlations. |
| Databáze: | OpenAIRE |
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