which means the mirror is transparent for the low-frequency field modes (to some extent, this is physically equivalent to having the mirror interact with the field for a finite period of time). After infrared regularization the particle number in a localized wave packet mode is finite. We further study the properties of the radiation flux and find that the radiation field is squeezed. This squeezing effect has gone unnoticed up to now, but in our circuit model it is a very straightforward result. We show that the generation of squeezing is closely related to cutting the correlations across the horizon. This mechanism of transferring correlations to squeezing may have important implications for black hole firewalls [@AMPS; @Braunstein13], as we shall subsequently discuss.

Our paper is organized as follows. In Sec. \[RindlerUnruh\], we briefly review the relations between Rindler modes and Unruh modes. Motivated from these transformations, we introduce our circuit model in Sec. \[circuit\] and calculate the radiation flux from an eternally accelerated mirror in Sec. \[radiation\]. In Sec. \[squeezing\], we show that the radiation field from the accelerated mirror is squeezed and the squeezing is related to the correlations across the horizon. In Sec. \[firewall\], we propose that a 