Steered coherence and entanglement in the Heisenberg XX chain under twisted boundary conditions |
| |
Institution: | School of Science, Xi'an University of Posts and Telecommunications, Xi'an 710121, China |
| |
Abstract: | We study steered coherence (SC) and entanglement in a three-spin Heisenberg XX model under twisted boundary conditions and show that their strengths can be significantly enhanced by tuning the twist angle. The optimal twist angle θopt for achieving the maximum l1 norm of SC is π in the region of weak field B and decreases gradually from π to 0 when B increases after a critical value, while for the relative entropy of SC, θopt equals π in the weak field region and 0 otherwise. The entanglement and the critical temperature above which the entanglement vanishes can also be significantly enhanced by tuning the twist angle from 0 to π. |
| |
Keywords: | quantum coherence entanglement twisted boundary conditions |
本文献已被 CNKI 等数据库收录! |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
| 点击此处可从《中国物理 B》下载免费的PDF全文 |
|