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arXiv 2103.07374gr-qcquant-ph
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通过部分反射加速镜的量子通信

Quantum communication through a partially reflecting accelerating mirror

Michael R. R. Good, Alessio Lapponi, Orlando Luongo, Stefano Mancini

摘要:

基于坍缩黑洞的零壳层可以用一个完全反射的加速镜来描述这一事实,我们将这个模型推广到镜面半透明的情形,并推导出相应的Bogoliubov系数的一般隐式表达式.然后,我们把这变成一个明确的分析形式,通过专注于通过冲力加速的镜子。从这样获得的Bogoliubov系数,我们得到的粒子生产。最后,我们将来自左过去时空区的光场,通过透明运动镜,最终到达右未来时空区的光场看作是高斯量子信道的作用。我们研究了这个通道的传输和噪声产生特性,将它们与镜子运动的Bogoliubov系数联系起来,通过它我们评估了传输经典和量子信息的能力。

英文摘要:

Motivated by the fact that the null-shell of a collapsing black hole can be described by a perfectly reflecting accelerating mirror, we investigate an extension of this model to mirror semi-transparency and derive a general implicit expression for the corresponding Bogoliubov coefficients. Then, we turn this into an explicit analytical form by focusing on mirrors that are accelerated via an impulsive force. From the so-obtained Bogoliubov coefficients we derive the particle production. Finally, we realize the field coming from left-past spacetime region, passing through the semitransparent moving mirror and ending up to right-future spacetime region as undergoing the action of a Gaussian quantum channel. We study the transmission and noisy generation properties of this channel, relating them to the Bogoliubov coefficients of the mirror's motion, through which we evaluate capacities in transmitting classical and quantum information.

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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