Asymmetric cloning of steering, quantum discord, and coherence
Cloning of steering, quantum discord, and coherence is investigated by using two types of cloners: local and nonlocal 1→2 optimal universal asymmetric cloning machines. We prove the impossibility of generating two steerable output states when local cloners are used. On the other hand, when nonlocal...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-08-01
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| Series: | Results in Physics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379725002177 |
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| author | Irina Ion Iulia Ghiu |
| author_facet | Irina Ion Iulia Ghiu |
| author_sort | Irina Ion |
| collection | DOAJ |
| description | Cloning of steering, quantum discord, and coherence is investigated by using two types of cloners: local and nonlocal 1→2 optimal universal asymmetric cloning machines. We prove the impossibility of generating two steerable output states when local cloners are used. On the other hand, when nonlocal cloning machines are employed, we show that there are ranges of the parameters which characterize the initial state and the cloning machines, such that the two output mixed states are steerable. Moreover, we obtain analytical expressions of the quantum discord and the coherence of the two output states generated by local and nonlocal asymmetric cloners. Further we make a detailed comparison of steering, quantum discord, and coherence of the output states obtained by local versus nonlocal cloning machines. |
| format | Article |
| id | doaj-art-9991cb02dc594624901516f65348fd4b |
| institution | Kabale University |
| issn | 2211-3797 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj-art-9991cb02dc594624901516f65348fd4b2025-08-20T04:00:43ZengElsevierResults in Physics2211-37972025-08-017510832310.1016/j.rinp.2025.108323Asymmetric cloning of steering, quantum discord, and coherenceIrina Ion0Iulia Ghiu1University of Bucharest, Faculty of Physics and Doctoral School of Physics, Atomistilor 405, Magurele, PO Box MG-11, R-077125, Romania; National Institute of Materials Physics, Atomistilor 405A, Magurele, R-077125, RomaniaUniversity of Bucharest, Faculty of Physics and Doctoral School of Physics, Atomistilor 405, Magurele, PO Box MG-11, R-077125, Romania; Corresponding author.Cloning of steering, quantum discord, and coherence is investigated by using two types of cloners: local and nonlocal 1→2 optimal universal asymmetric cloning machines. We prove the impossibility of generating two steerable output states when local cloners are used. On the other hand, when nonlocal cloning machines are employed, we show that there are ranges of the parameters which characterize the initial state and the cloning machines, such that the two output mixed states are steerable. Moreover, we obtain analytical expressions of the quantum discord and the coherence of the two output states generated by local and nonlocal asymmetric cloners. Further we make a detailed comparison of steering, quantum discord, and coherence of the output states obtained by local versus nonlocal cloning machines.http://www.sciencedirect.com/science/article/pii/S2211379725002177Asymmetric cloningSteeringQuantum discordCoherence |
| spellingShingle | Irina Ion Iulia Ghiu Asymmetric cloning of steering, quantum discord, and coherence Results in Physics Asymmetric cloning Steering Quantum discord Coherence |
| title | Asymmetric cloning of steering, quantum discord, and coherence |
| title_full | Asymmetric cloning of steering, quantum discord, and coherence |
| title_fullStr | Asymmetric cloning of steering, quantum discord, and coherence |
| title_full_unstemmed | Asymmetric cloning of steering, quantum discord, and coherence |
| title_short | Asymmetric cloning of steering, quantum discord, and coherence |
| title_sort | asymmetric cloning of steering quantum discord and coherence |
| topic | Asymmetric cloning Steering Quantum discord Coherence |
| url | http://www.sciencedirect.com/science/article/pii/S2211379725002177 |
| work_keys_str_mv | AT irinaion asymmetriccloningofsteeringquantumdiscordandcoherence AT iuliaghiu asymmetriccloningofsteeringquantumdiscordandcoherence |