The New Journal of Physics is an open-access journal at the forefront of physics, published in partnership with the Deutsche Physikalische Gesellschaft and the Institute of Physics. A paper titled "High key rate continuous-variable quantum key distribution using telecom optical components" was published, reporting a high-key-rate Gaussian-modulated continuous-variable quantum key distribution (CV-QKD) system using telecom optical components. The system achieved a high asymptotic secret key rate (SKR) of 10.37 Mbps over 20 km standard telecom fiber, with secure distances exceeding 100 km. The system utilized a classical optical IQ modulator for high-rate low-noise Gaussian modulation of coherent states, an integrated coherent receiver for high-baud low-intensity quantum signals under the shot-noise limit, and digital signal processing algorithms for accurate signal recovery and key distillation. The system demonstrated high performance and miniaturization, suitable for metropolitan quantum networks. The paper discusses the protocol and setup of the CV-QKD system, including the use of a local oscillator (LLO) scheme, the Gaussian modulation process, phase noise elimination, excess noise measurement, and SKR analysis. The results show that the system achieved SKR values of 10.37 Mbps, 1.61 Mbps, 337.82 kbps, and 58.06 kbps over 20 km, 50 km, 70 km, and 100 km, respectively. The paper also discusses the system's feasibility, practical security, and potential applications in quantum communication networks. The study highlights the importance of high SKR in quantum key distribution for secure communication and the potential of using telecom optical components for high-performance quantum key distribution systems.The New Journal of Physics is an open-access journal at the forefront of physics, published in partnership with the Deutsche Physikalische Gesellschaft and the Institute of Physics. A paper titled "High key rate continuous-variable quantum key distribution using telecom optical components" was published, reporting a high-key-rate Gaussian-modulated continuous-variable quantum key distribution (CV-QKD) system using telecom optical components. The system achieved a high asymptotic secret key rate (SKR) of 10.37 Mbps over 20 km standard telecom fiber, with secure distances exceeding 100 km. The system utilized a classical optical IQ modulator for high-rate low-noise Gaussian modulation of coherent states, an integrated coherent receiver for high-baud low-intensity quantum signals under the shot-noise limit, and digital signal processing algorithms for accurate signal recovery and key distillation. The system demonstrated high performance and miniaturization, suitable for metropolitan quantum networks. The paper discusses the protocol and setup of the CV-QKD system, including the use of a local oscillator (LLO) scheme, the Gaussian modulation process, phase noise elimination, excess noise measurement, and SKR analysis. The results show that the system achieved SKR values of 10.37 Mbps, 1.61 Mbps, 337.82 kbps, and 58.06 kbps over 20 km, 50 km, 70 km, and 100 km, respectively. The paper also discusses the system's feasibility, practical security, and potential applications in quantum communication networks. The study highlights the importance of high SKR in quantum key distribution for secure communication and the potential of using telecom optical components for high-performance quantum key distribution systems.