Thermal entanglement in the three-qubit Tavis-Cummings model with Kerr nonlinearity
We obtained a solution of the Liouville equation for a system of three identical qubits interacting without detuning with a thermal field of a cavity with a Kerr medium, for two type of initial pure genuine W-entangled qubits states. On its basis, three entanglement parameters: fidelity, tangle and...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Samara National Research University
2025-02-01
|
| Series: | Компьютерная оптика |
| Subjects: | |
| Online Access: | https://computeroptics.ru/eng/KO/Annot/KO49-1/490107e.html |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849233454500151296 |
|---|---|
| author | A.R. Bagrov E.K. Bashkirov |
| author_facet | A.R. Bagrov E.K. Bashkirov |
| author_sort | A.R. Bagrov |
| collection | DOAJ |
| description | We obtained a solution of the Liouville equation for a system of three identical qubits interacting without detuning with a thermal field of a cavity with a Kerr medium, for two type of initial pure genuine W-entangled qubits states. On its basis, three entanglement parameters: fidelity, tangle and pairwise negativities were calculated. We obtained that sudden death of entanglement takes place for large intensities of the cavity thermal noise for all considered W-states. We also showed that Kerr nonlinearity prevents the destruction of the initial qubits entanglement induced by the thermal noise of the cavity and eliminates the sudden death of entanglement. |
| format | Article |
| id | doaj-art-2601e88e15d24f92ab69f096ea422698 |
| institution | Kabale University |
| issn | 0134-2452 2412-6179 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Samara National Research University |
| record_format | Article |
| series | Компьютерная оптика |
| spelling | doaj-art-2601e88e15d24f92ab69f096ea4226982025-08-20T05:24:06ZengSamara National Research UniversityКомпьютерная оптика0134-24522412-61792025-02-01491535910.18287/2412-6179-CO-1544Thermal entanglement in the three-qubit Tavis-Cummings model with Kerr nonlinearityA.R. Bagrov0E.K. Bashkirov1Samara National Research UniversitySamara National Research UniversityWe obtained a solution of the Liouville equation for a system of three identical qubits interacting without detuning with a thermal field of a cavity with a Kerr medium, for two type of initial pure genuine W-entangled qubits states. On its basis, three entanglement parameters: fidelity, tangle and pairwise negativities were calculated. We obtained that sudden death of entanglement takes place for large intensities of the cavity thermal noise for all considered W-states. We also showed that Kerr nonlinearity prevents the destruction of the initial qubits entanglement induced by the thermal noise of the cavity and eliminates the sudden death of entanglement.https://computeroptics.ru/eng/KO/Annot/KO49-1/490107e.htmlqubitscavitythermal fieldentanglementfidelitytanglenegativitykerr nonlinearitysudden death of entanglement |
| spellingShingle | A.R. Bagrov E.K. Bashkirov Thermal entanglement in the three-qubit Tavis-Cummings model with Kerr nonlinearity Компьютерная оптика qubits cavity thermal field entanglement fidelity tangle negativity kerr nonlinearity sudden death of entanglement |
| title | Thermal entanglement in the three-qubit Tavis-Cummings model with Kerr nonlinearity |
| title_full | Thermal entanglement in the three-qubit Tavis-Cummings model with Kerr nonlinearity |
| title_fullStr | Thermal entanglement in the three-qubit Tavis-Cummings model with Kerr nonlinearity |
| title_full_unstemmed | Thermal entanglement in the three-qubit Tavis-Cummings model with Kerr nonlinearity |
| title_short | Thermal entanglement in the three-qubit Tavis-Cummings model with Kerr nonlinearity |
| title_sort | thermal entanglement in the three qubit tavis cummings model with kerr nonlinearity |
| topic | qubits cavity thermal field entanglement fidelity tangle negativity kerr nonlinearity sudden death of entanglement |
| url | https://computeroptics.ru/eng/KO/Annot/KO49-1/490107e.html |
| work_keys_str_mv | AT arbagrov thermalentanglementinthethreequbittaviscummingsmodelwithkerrnonlinearity AT ekbashkirov thermalentanglementinthethreequbittaviscummingsmodelwithkerrnonlinearity |