Scholarlink

<p>We investigate the relativistic dynamics of quantum entanglement in a four-qubit cluster (<i>CL</i><sub>4</sub>) state using a fully operational Unruh-DeWitt detector framework. Contrary to the widely held expectation that the Unruh effect inevitably degrades initially maximal entanglement, we demonstrate that the 1 – 3 bipartite entanglement of the <i>CL</i><sub>4</sub> state remains strictly maximal for all accelerations, including the infinite-acceleration limit. This result uncovers a previously unexplored phenomenon, namely the “complete freezing of initially maximal entanglement” under relativistic motion. To the best of our knowledge, this is the first identification and systematic characterization of such a phenomenon within a relativistic framework. These findings overturn the conventional view that acceleration universally diminishes maximal entanglement and establish the <i>CL</i><sub>4</sub> state as a promising resource for quantum information processing in non-inertial or curved-spacetime settings.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Does relativistic motion really freeze initially maximal entanglement?

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年3月23日

查看全文
  • Si-Han Li,
  • Hui-Chen Yang,
  • Rui-Yang Xu,
  • Shu-Min Wu

摘要

We investigate the relativistic dynamics of quantum entanglement in a four-qubit cluster (CL4) state using a fully operational Unruh-DeWitt detector framework. Contrary to the widely held expectation that the Unruh effect inevitably degrades initially maximal entanglement, we demonstrate that the 1 – 3 bipartite entanglement of the CL4 state remains strictly maximal for all accelerations, including the infinite-acceleration limit. This result uncovers a previously unexplored phenomenon, namely the “complete freezing of initially maximal entanglement” under relativistic motion. To the best of our knowledge, this is the first identification and systematic characterization of such a phenomenon within a relativistic framework. These findings overturn the conventional view that acceleration universally diminishes maximal entanglement and establish the CL4 state as a promising resource for quantum information processing in non-inertial or curved-spacetime settings.