  One of the limitation of continuous variable quantum key distribution is
relatively short transmission distance of secure keys. In order to overcome the
limitation, some solutions have been proposed such as reverse reconciliation,
trusted noise concept, and non-Gaussian operation. In this paper, we propose a
protocol using photon subtraction at receiver which utilizes synergy of the
aforementioned properties. By simulations, we show performance of the proposed
protocol outperforms other conventional protocols. We also find the protocol is
more efficient in a practical case. Finally, we provide a guide for
provisioning a system based on the protocol through an analysis for noise from
a channel.
