Steered coherence of a central two-qubit system coupled to an XY spin chain
We investigate the average steered coherence (ASC) of a central two-qubit system coupled to an XY spin-chain environment. It is shown that there exists subspace in which the initial states are immune to this environment. Outside of this subspace, the decay of the ASC can be significantly suppressed...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-02-01
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| Series: | Results in Physics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379724000159 |
| _version_ | 1827349838843346944 |
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| author | Xian-Zhe Duan Ming-Liang Hu |
| author_facet | Xian-Zhe Duan Ming-Liang Hu |
| author_sort | Xian-Zhe Duan |
| collection | DOAJ |
| description | We investigate the average steered coherence (ASC) of a central two-qubit system coupled to an XY spin-chain environment. It is shown that there exists subspace in which the initial states are immune to this environment. Outside of this subspace, the decay of the ASC can be significantly suppressed by tuning the interaction of the central qubits and its anisotropy in the z axis, as well as the anisotropy of the spin–spin interaction in the xy plane of the environment and the strength of the transverse magnetic field. For the initial Bell states and their unitary equivalent classes, one can also identify system and environmental parameters for which the ASC oscillates near its maximum even in the long-time interval. |
| first_indexed | 2024-03-08T00:50:02Z |
| format | Article |
| id | doaj.art-73a5ddf6cfe34e39a0cb1da7f365b953 |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-03-08T00:50:02Z |
| publishDate | 2024-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-73a5ddf6cfe34e39a0cb1da7f365b9532024-02-15T05:23:38ZengElsevierResults in Physics2211-37972024-02-0157107333Steered coherence of a central two-qubit system coupled to an XY spin chainXian-Zhe Duan0Ming-Liang Hu1School of Science, Xi’an University of Posts and Telecommunications, Xi’an 710121, ChinaCorresponding author.; School of Science, Xi’an University of Posts and Telecommunications, Xi’an 710121, ChinaWe investigate the average steered coherence (ASC) of a central two-qubit system coupled to an XY spin-chain environment. It is shown that there exists subspace in which the initial states are immune to this environment. Outside of this subspace, the decay of the ASC can be significantly suppressed by tuning the interaction of the central qubits and its anisotropy in the z axis, as well as the anisotropy of the spin–spin interaction in the xy plane of the environment and the strength of the transverse magnetic field. For the initial Bell states and their unitary equivalent classes, one can also identify system and environmental parameters for which the ASC oscillates near its maximum even in the long-time interval.http://www.sciencedirect.com/science/article/pii/S2211379724000159Quantum coherenceQuantum correlationSpin environment |
| spellingShingle | Xian-Zhe Duan Ming-Liang Hu Steered coherence of a central two-qubit system coupled to an XY spin chain Results in Physics Quantum coherence Quantum correlation Spin environment |
| title | Steered coherence of a central two-qubit system coupled to an XY spin chain |
| title_full | Steered coherence of a central two-qubit system coupled to an XY spin chain |
| title_fullStr | Steered coherence of a central two-qubit system coupled to an XY spin chain |
| title_full_unstemmed | Steered coherence of a central two-qubit system coupled to an XY spin chain |
| title_short | Steered coherence of a central two-qubit system coupled to an XY spin chain |
| title_sort | steered coherence of a central two qubit system coupled to an xy spin chain |
| topic | Quantum coherence Quantum correlation Spin environment |
| url | http://www.sciencedirect.com/science/article/pii/S2211379724000159 |
| work_keys_str_mv | AT xianzheduan steeredcoherenceofacentraltwoqubitsystemcoupledtoanxyspinchain AT minglianghu steeredcoherenceofacentraltwoqubitsystemcoupledtoanxyspinchain |