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arXiv 1603.06641gr-qcquant-ph
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相对论量子通信信道的非微扰方法

Nonperturbative approach to relativistic quantum communication channels

Andre G. S. Landulfo

摘要:

研究了在全局双曲时空中,两个任意观测者之间经典信息和量子信息的传输。假设场处于任意准自由态,不选择正则对易关系的表示。发送者和接收者都拥有一个定域的二能级量子系统,它们可以与量子场相互作用,分别准备信道的输入和接收信道的输出。二能级系统与量子场之间的相互作用使得人们可以精确地追踪出场的自由度,从而以非微扰的方式获得量子信道。最后,我们确定了无辅助以及纠缠辅助的经典和量子信道的能力。

英文摘要:

We investigate the transmission of both classical and quantum information between two arbitrary observers in globally hyperbolic spacetimes using a quantum field as a communication channel. The field is supposed to be in some arbitrary quasifree state and no choice of representation of its canonical commutation relations is made. Both sender and receiver possess some localized two-level quantum system with which they can interact with the quantum field to prepare the input and receive the output of the channel, respectively. The interaction between the two-level systems and the quantum field is such that one can trace out the field degrees of freedom exactly and thus obtain the quantum channel in a nonperturbative way. We end the paper determining the unassisted as well as the entanglement-assisted classical and quantum channel capacities.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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